-
Introduction to sampling distributions | Sampling distributions | AP Statistics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions
Introduction to sampling distributions.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating ...
published: 29 Nov 2017
-
Statistical vs Nonstatistical Sampling
There are 2 general approaches to sampling: statistical sampling and nonstatistical sampling.
Statistical sampling is more objective and uses probability to determine the appropriate sample size. While it is does not eliminate sampling risk, statistical sampling allows the auditor to measure sampling risk and take steps to control it.
Nonstatistical sampling relies more on the auditor's judgment. For example, if a company had 10,000 customers, but 3 of those customers were responsible for 97% of the receivables, the auditor might simply send confirmations to the 3 largest customers. The auditor would not be using the laws of probability to draw the sample, but would be using his or her judgment to draw the sample.—
Edspira is the creation of Michael McLaughlin, an award-winning pr...
published: 08 Oct 2019
-
Statistical Tests: Choosing which statistical test to use
Seven different statistical tests and a process by which you can decide which to use.
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
The tests are:
Test for a mean,
test for a proportion,
difference of proportions,
difference of two means - independent samples,
difference of two means - paired,
chi-squared test for independence and
regression.
This video draws together videos about Helen, her brother, Luke and the choconutties.
There is a sequel to give more practice choosing and illustrations of the different types of test with hypotheses. https://youtu.be/QrYgXZf-Ay8
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Here are links to the videos mentioned.
Test for a mean: https://youtu.be/Y3mGoW5w28c
Dif...
published: 01 Feb 2012
-
Understanding Statistical Inference - statistics help
The most difficult concept in statistics is that of inference. This video explains what statistical inference is and gives memorable examples.
0:00 Introduction
0:22 Descriptive statistics and inferential statistics
1:00 Definition of inference
1:18 Examples of populations and samples
2:19 Three ideas underlying inference
4:00 Example of political poll
5:15 Margin of error for 1000 people is about 3%
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Videos referred to in the video:
Sampling Error: https://youtu.be/y3A0lUkpAko
Understanding Confidence Intervals: https://youtu.be/tFWsuO9f74o
Understanding the p-value: https://youtu.be/eyknGvncKLw
Hypothesis testing: https://youtu.be/0zZYBALbZgg
Non-sampling error: (member video) https://youtu.be/nafuMNb...
published: 09 Nov 2015
-
Statistical Power, Clearly Explained!!!
Statistical Power is one of those things that sounds so fancy and, well, "Powerful", but it's actually a really simple concept and this video explains it so it's clear as day.
NOTE: This StatQuest assumes that you are already familiar with p-values and the normal distribution. If not, check out the 'Quests...
p-values: What they are and how to interpret them: https://youtu.be/vemZtEM63GY
How to calculate p-values: https://youtu.be/JQc3yx0-Q9E
The normal distribution: https://youtu.be/rzFX5NWojp0
For a complete index of all the StatQuest videos, check out:
https://statquest.org/video-index/
If you'd like to support StatQuest, please consider...
Support StatQuest by buying The StatQuest Illustrated Guide to Machine Learning!!!
PDF - https://statquest.gumroad.com/l/wvtmc
Paperback - https...
published: 04 May 2020
-
Choosing a Statistical Test
In common health care research, some hypothesis tests are more common than others. How do you decide, between the common tests, which one is the right one for your research?
Thank you to the Statistical Learning Center for their excellent video on the same topic.
https://www.youtube.com/rulIUAN0U3w
published: 15 May 2015
-
01 - Sampling Distributions - Learn Statistical Sampling (Statistics Course)
This is just a few minutes of a complete course.
Get full lessons & more subjects at: http://www.MathTutorDVD.com.
In this lesson the student will learn the fundamentals of sampling distributions in statistics. We will discuss the normal distribution, skewed distributions, uniform distributions, and more.
published: 04 Feb 2016
-
What are Basic Statistical Symbols for Samples and Population Video 2
Mean, Standard Deviation, Median, Variance, Sample Size, Math 20 Element of Statistics,
published: 30 Apr 2020
-
Statistical Sampling and Non-Statistical Sampling-Probabilistic Selection |CPA Exam
IN this video I will discuss statistical and non-statistical sampling probabilistic selection.
✔️Accounting students and CPA Exam candidates, check my website for additional resources: https://farhatlectures.com/
📧Connect with me on social media: https://linktr.ee/farhatlectures
#cpaexam #accountingstudent #auditcourse
Explain the concept of representative sampling.
When selecting a sample from a population, the auditor strives to obtain a representative sample. A representative sample is one in which the characteristics in the sample are approximately the same as those of the population. This means that the sampled items are similar to the items not sampled. Assume a client’s internal controls require a clerk to attach a shipping document to every duplicate sales invoice, but the cler...
published: 23 Sep 2017
-
How To Know Which Statistical Test To Use For Hypothesis Testing
Hi! My name is Kody Amour, and I make free math videos on YouTube. My goal is to provide free open-access online college math lecture series on YouTube using free open-access resources. I rely on generous donations and ad revenue - a special thanks to everyone who helped this channel grow.
***Please only give if you have the financial ability to do so.***
Support this Amour Learning channel directly on Patreon: https://www.patreon.com/amourlearning
-------------------------------------------------------------------------------------------------------------------
Credit to all of the authors of all of the resources below that greatly helped influence this video. My newer videos are much more original than these videos.
Free open-access online math textbooks:
https://aimath.org/textbooks/...
published: 05 Sep 2019
7:18
Introduction to sampling distributions | Sampling distributions | AP Statistics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/ap-statistics/sampling-distributi...
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions
Introduction to sampling distributions.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
https://wn.com/Introduction_To_Sampling_Distributions_|_Sampling_Distributions_|_Ap_Statistics_|_Khan_Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions
Introduction to sampling distributions.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/sampling-distribution-ap/what-is-sampling-distribution/v/introduction-to-sampling-distributions?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
- published: 29 Nov 2017
- views: 786977
3:42
Statistical vs Nonstatistical Sampling
There are 2 general approaches to sampling: statistical sampling and nonstatistical sampling.
Statistical sampling is more objective and uses probability to...
There are 2 general approaches to sampling: statistical sampling and nonstatistical sampling.
Statistical sampling is more objective and uses probability to determine the appropriate sample size. While it is does not eliminate sampling risk, statistical sampling allows the auditor to measure sampling risk and take steps to control it.
Nonstatistical sampling relies more on the auditor's judgment. For example, if a company had 10,000 customers, but 3 of those customers were responsible for 97% of the receivables, the auditor might simply send confirmations to the 3 largest customers. The auditor would not be using the laws of probability to draw the sample, but would be using his or her judgment to draw the sample.—
Edspira is the creation of Michael McLaughlin, an award-winning professor who went from teenage homelessness to a PhD. Edspira’s mission is to make a high-quality business education freely available to the world.
—
SUBSCRIBE FOR A FREE 53-PAGE GUIDE TO THE FINANCIAL STATEMENTS, PLUS:
• A 23-PAGE GUIDE TO MANAGERIAL ACCOUNTING
• A 44-PAGE GUIDE TO U.S. TAXATION
• A 75-PAGE GUIDE TO FINANCIAL STATEMENT ANALYSIS
• MANY MORE FREE PDF GUIDES AND SPREADSHEETS
* http://eepurl.com/dIaa5z
—
SUPPORT EDSPIRA ON PATREON
*https://www.patreon.com/prof_mclaughlin
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GET CERTIFIED IN FINANCIAL STATEMENT ANALYSIS, IFRS 16, AND ASSET-LIABILITY MANAGEMENT
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—
LISTEN TO THE SCHEME PODCAST
* Apple Podcasts: https://podcasts.apple.com/us/podcast/scheme/id1522352725
* Spotify: https://open.spotify.com/show/4WaNTqVFxISHlgcSWNT1kc
* Website: https://www.edspira.com/podcast-2/
—
GET TAX TIPS ON TIKTOK
* https://www.tiktok.com/@prof_mclaughlin
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ACCESS INDEX OF VIDEOS
* https://www.edspira.com/index
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CONNECT WITH EDSPIRA
* Facebook: https://www.facebook.com/Edspira
* Instagram: https://www.instagram.com/edspiradotcom
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CONNECT WITH MICHAEL
* Twitter: https://www.twitter.com/Prof_McLaughlin
* LinkedIn: https://www.linkedin.com/in/prof-michael-mclaughlin
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ABOUT EDSPIRA AND ITS CREATOR
* https://www.edspira.com/about/
* https://michaelmclaughlin.com
https://wn.com/Statistical_Vs_Nonstatistical_Sampling
There are 2 general approaches to sampling: statistical sampling and nonstatistical sampling.
Statistical sampling is more objective and uses probability to determine the appropriate sample size. While it is does not eliminate sampling risk, statistical sampling allows the auditor to measure sampling risk and take steps to control it.
Nonstatistical sampling relies more on the auditor's judgment. For example, if a company had 10,000 customers, but 3 of those customers were responsible for 97% of the receivables, the auditor might simply send confirmations to the 3 largest customers. The auditor would not be using the laws of probability to draw the sample, but would be using his or her judgment to draw the sample.—
Edspira is the creation of Michael McLaughlin, an award-winning professor who went from teenage homelessness to a PhD. Edspira’s mission is to make a high-quality business education freely available to the world.
—
SUBSCRIBE FOR A FREE 53-PAGE GUIDE TO THE FINANCIAL STATEMENTS, PLUS:
• A 23-PAGE GUIDE TO MANAGERIAL ACCOUNTING
• A 44-PAGE GUIDE TO U.S. TAXATION
• A 75-PAGE GUIDE TO FINANCIAL STATEMENT ANALYSIS
• MANY MORE FREE PDF GUIDES AND SPREADSHEETS
* http://eepurl.com/dIaa5z
—
SUPPORT EDSPIRA ON PATREON
*https://www.patreon.com/prof_mclaughlin
—
GET CERTIFIED IN FINANCIAL STATEMENT ANALYSIS, IFRS 16, AND ASSET-LIABILITY MANAGEMENT
* https://edspira.thinkific.com
—
LISTEN TO THE SCHEME PODCAST
* Apple Podcasts: https://podcasts.apple.com/us/podcast/scheme/id1522352725
* Spotify: https://open.spotify.com/show/4WaNTqVFxISHlgcSWNT1kc
* Website: https://www.edspira.com/podcast-2/
—
GET TAX TIPS ON TIKTOK
* https://www.tiktok.com/@prof_mclaughlin
—
ACCESS INDEX OF VIDEOS
* https://www.edspira.com/index
—
CONNECT WITH EDSPIRA
* Facebook: https://www.facebook.com/Edspira
* Instagram: https://www.instagram.com/edspiradotcom
* LinkedIn: https://www.linkedin.com/company/edspira
—
CONNECT WITH MICHAEL
* Twitter: https://www.twitter.com/Prof_McLaughlin
* LinkedIn: https://www.linkedin.com/in/prof-michael-mclaughlin
—
ABOUT EDSPIRA AND ITS CREATOR
* https://www.edspira.com/about/
* https://michaelmclaughlin.com
- published: 08 Oct 2019
- views: 28349
9:33
Statistical Tests: Choosing which statistical test to use
Seven different statistical tests and a process by which you can decide which to use.
See https://creativemaths.net/videos/ for all of Dr Nic's videos organise...
Seven different statistical tests and a process by which you can decide which to use.
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
The tests are:
Test for a mean,
test for a proportion,
difference of proportions,
difference of two means - independent samples,
difference of two means - paired,
chi-squared test for independence and
regression.
This video draws together videos about Helen, her brother, Luke and the choconutties.
There is a sequel to give more practice choosing and illustrations of the different types of test with hypotheses. https://youtu.be/QrYgXZf-Ay8
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Here are links to the videos mentioned.
Test for a mean: https://youtu.be/Y3mGoW5w28c
Difference of two means, independent samples: https://youtu.be/0zZYBALbZgg
Difference of two means, paired samples: Coming soon
Chi Sq test: https://youtu.be/qfxzG6FgVlM
Regression: https://youtu.be/Ohp1PpzrRhE
#DrNicStats #Statistics
https://wn.com/Statistical_Tests_Choosing_Which_Statistical_Test_To_Use
Seven different statistical tests and a process by which you can decide which to use.
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
The tests are:
Test for a mean,
test for a proportion,
difference of proportions,
difference of two means - independent samples,
difference of two means - paired,
chi-squared test for independence and
regression.
This video draws together videos about Helen, her brother, Luke and the choconutties.
There is a sequel to give more practice choosing and illustrations of the different types of test with hypotheses. https://youtu.be/QrYgXZf-Ay8
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Here are links to the videos mentioned.
Test for a mean: https://youtu.be/Y3mGoW5w28c
Difference of two means, independent samples: https://youtu.be/0zZYBALbZgg
Difference of two means, paired samples: Coming soon
Chi Sq test: https://youtu.be/qfxzG6FgVlM
Regression: https://youtu.be/Ohp1PpzrRhE
#DrNicStats #Statistics
- published: 01 Feb 2012
- views: 1731739
6:46
Understanding Statistical Inference - statistics help
The most difficult concept in statistics is that of inference. This video explains what statistical inference is and gives memorable examples.
0:00 Introductio...
The most difficult concept in statistics is that of inference. This video explains what statistical inference is and gives memorable examples.
0:00 Introduction
0:22 Descriptive statistics and inferential statistics
1:00 Definition of inference
1:18 Examples of populations and samples
2:19 Three ideas underlying inference
4:00 Example of political poll
5:15 Margin of error for 1000 people is about 3%
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Videos referred to in the video:
Sampling Error: https://youtu.be/y3A0lUkpAko
Understanding Confidence Intervals: https://youtu.be/tFWsuO9f74o
Understanding the p-value: https://youtu.be/eyknGvncKLw
Hypothesis testing: https://youtu.be/0zZYBALbZgg
Non-sampling error: (member video) https://youtu.be/nafuMNbooY0
Sampling methods: https://youtu.be/be9e-Q-jC-0
Causation: https://youtu.be/FG7xnWmZlPE
#DrNicStats #Statistics
https://wn.com/Understanding_Statistical_Inference_Statistics_Help
The most difficult concept in statistics is that of inference. This video explains what statistical inference is and gives memorable examples.
0:00 Introduction
0:22 Descriptive statistics and inferential statistics
1:00 Definition of inference
1:18 Examples of populations and samples
2:19 Three ideas underlying inference
4:00 Example of political poll
5:15 Margin of error for 1000 people is about 3%
See https://creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Videos referred to in the video:
Sampling Error: https://youtu.be/y3A0lUkpAko
Understanding Confidence Intervals: https://youtu.be/tFWsuO9f74o
Understanding the p-value: https://youtu.be/eyknGvncKLw
Hypothesis testing: https://youtu.be/0zZYBALbZgg
Non-sampling error: (member video) https://youtu.be/nafuMNbooY0
Sampling methods: https://youtu.be/be9e-Q-jC-0
Causation: https://youtu.be/FG7xnWmZlPE
#DrNicStats #Statistics
- published: 09 Nov 2015
- views: 394815
8:19
Statistical Power, Clearly Explained!!!
Statistical Power is one of those things that sounds so fancy and, well, "Powerful", but it's actually a really simple concept and this video explains it so it'...
Statistical Power is one of those things that sounds so fancy and, well, "Powerful", but it's actually a really simple concept and this video explains it so it's clear as day.
NOTE: This StatQuest assumes that you are already familiar with p-values and the normal distribution. If not, check out the 'Quests...
p-values: What they are and how to interpret them: https://youtu.be/vemZtEM63GY
How to calculate p-values: https://youtu.be/JQc3yx0-Q9E
The normal distribution: https://youtu.be/rzFX5NWojp0
For a complete index of all the StatQuest videos, check out:
https://statquest.org/video-index/
If you'd like to support StatQuest, please consider...
Support StatQuest by buying The StatQuest Illustrated Guide to Machine Learning!!!
PDF - https://statquest.gumroad.com/l/wvtmc
Paperback - https://www.amazon.com/dp/B09ZCKR4H6
Kindle eBook - https://www.amazon.com/dp/B09ZG79HXC
Patreon: https://www.patreon.com/statquest
...or...
YouTube Membership: https://www.youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...a cool StatQuest t-shirt or sweatshirt:
https://shop.spreadshirt.com/statquest-with-josh-starmer/
...buying one or two of my songs (or go large and get a whole album!)
https://joshuastarmer.bandcamp.com/
...or just donating to StatQuest!
https://www.paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
https://twitter.com/joshuastarmer
0:00 Awesome song and introduction
0:37 Concepts of Statistical Power
3:19 Definition of Statistical Power
4:57 Overlap and Statistical Power
6:35 Sample size and Statistical Power
7:03 Summary of concepts
#statquest #statistics
https://wn.com/Statistical_Power,_Clearly_Explained
Statistical Power is one of those things that sounds so fancy and, well, "Powerful", but it's actually a really simple concept and this video explains it so it's clear as day.
NOTE: This StatQuest assumes that you are already familiar with p-values and the normal distribution. If not, check out the 'Quests...
p-values: What they are and how to interpret them: https://youtu.be/vemZtEM63GY
How to calculate p-values: https://youtu.be/JQc3yx0-Q9E
The normal distribution: https://youtu.be/rzFX5NWojp0
For a complete index of all the StatQuest videos, check out:
https://statquest.org/video-index/
If you'd like to support StatQuest, please consider...
Support StatQuest by buying The StatQuest Illustrated Guide to Machine Learning!!!
PDF - https://statquest.gumroad.com/l/wvtmc
Paperback - https://www.amazon.com/dp/B09ZCKR4H6
Kindle eBook - https://www.amazon.com/dp/B09ZG79HXC
Patreon: https://www.patreon.com/statquest
...or...
YouTube Membership: https://www.youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...a cool StatQuest t-shirt or sweatshirt:
https://shop.spreadshirt.com/statquest-with-josh-starmer/
...buying one or two of my songs (or go large and get a whole album!)
https://joshuastarmer.bandcamp.com/
...or just donating to StatQuest!
https://www.paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
https://twitter.com/joshuastarmer
0:00 Awesome song and introduction
0:37 Concepts of Statistical Power
3:19 Definition of Statistical Power
4:57 Overlap and Statistical Power
6:35 Sample size and Statistical Power
7:03 Summary of concepts
#statquest #statistics
- published: 04 May 2020
- views: 298428
12:32
Choosing a Statistical Test
In common health care research, some hypothesis tests are more common than others. How do you decide, between the common tests, which one is the right one for y...
In common health care research, some hypothesis tests are more common than others. How do you decide, between the common tests, which one is the right one for your research?
Thank you to the Statistical Learning Center for their excellent video on the same topic.
https://www.youtube.com/rulIUAN0U3w
https://wn.com/Choosing_A_Statistical_Test
In common health care research, some hypothesis tests are more common than others. How do you decide, between the common tests, which one is the right one for your research?
Thank you to the Statistical Learning Center for their excellent video on the same topic.
https://www.youtube.com/rulIUAN0U3w
- published: 15 May 2015
- views: 796117
24:35
01 - Sampling Distributions - Learn Statistical Sampling (Statistics Course)
This is just a few minutes of a complete course.
Get full lessons & more subjects at: http://www.MathTutorDVD.com.
In this lesson the student will learn the f...
This is just a few minutes of a complete course.
Get full lessons & more subjects at: http://www.MathTutorDVD.com.
In this lesson the student will learn the fundamentals of sampling distributions in statistics. We will discuss the normal distribution, skewed distributions, uniform distributions, and more.
https://wn.com/01_Sampling_Distributions_Learn_Statistical_Sampling_(Statistics_Course)
This is just a few minutes of a complete course.
Get full lessons & more subjects at: http://www.MathTutorDVD.com.
In this lesson the student will learn the fundamentals of sampling distributions in statistics. We will discuss the normal distribution, skewed distributions, uniform distributions, and more.
- published: 04 Feb 2016
- views: 388708
2:36
What are Basic Statistical Symbols for Samples and Population Video 2
Mean, Standard Deviation, Median, Variance, Sample Size, Math 20 Element of Statistics,
Mean, Standard Deviation, Median, Variance, Sample Size, Math 20 Element of Statistics,
https://wn.com/What_Are_Basic_Statistical_Symbols_For_Samples_And_Population_Video_2
Mean, Standard Deviation, Median, Variance, Sample Size, Math 20 Element of Statistics,
- published: 30 Apr 2020
- views: 7372
20:15
Statistical Sampling and Non-Statistical Sampling-Probabilistic Selection |CPA Exam
IN this video I will discuss statistical and non-statistical sampling probabilistic selection.
✔️Accounting students and CPA Exam candidates, check my website ...
IN this video I will discuss statistical and non-statistical sampling probabilistic selection.
✔️Accounting students and CPA Exam candidates, check my website for additional resources: https://farhatlectures.com/
📧Connect with me on social media: https://linktr.ee/farhatlectures
#cpaexam #accountingstudent #auditcourse
Explain the concept of representative sampling.
When selecting a sample from a population, the auditor strives to obtain a representative sample. A representative sample is one in which the characteristics in the sample are approximately the same as those of the population. This means that the sampled items are similar to the items not sampled. Assume a client’s internal controls require a clerk to attach a shipping document to every duplicate sales invoice, but the clerk fails to follow the procedure exactly 3 percent of the time. If the auditor selects a sample of 100 duplicate sales invoices and finds three are missing attached shipping documents, the sample is highly representative. If two or four such items are found in the sample, the sample is reasonably representative. If no or many missing items are found, the sample is nonrepresentative.
In practice, auditors never know whether a sample is representative, even after all testing is complete. (The only way to know if a sample is representative is to subsequently audit the entire population.) However, auditors can increase the likelihood of a sample being representative by using care in designing the sampling process, sample selection, and evaluation of sample results. A sample result can lead to an incorrect conclusion due to sampling error or nonsampling error. The risk of these two types of errors occurring is called sampling risk and nonsampling risk.
Sampling risk is the risk that an auditor reaches an incorrect conclusion because the sample is not representative of the population. Sampling risk is an inherent part of sampling that results from testing less than the entire population. For example, assume the auditor decided that a control is not effective if there is a population exception rate of 6 percent. Assume the auditor accepts the control as effective based on tests of the control with a sample of 100 items that had two exceptions. If the population actually has an 8 percent exception rate, the auditor incorrectly accepted the population because the sample was not sufficiently representative of the population.
Auditors have two ways to control sampling risk:
Adjust sample size
Use an appropriate method of selecting sample items from the population
Increasing sample size reduces sampling risk, and vice versa. At one extreme, a sample of all the items of a population has a zero sampling risk. At the other extreme, a sample of one or two items has an extremely high sampling risk.
Using an appropriate sample selection method increases the likelihood of representativeness. This does not eliminate or even reduce sampling risk, but it does allow the auditor to measure the risk associated with a given sample size if statistical methods of sample selection and evaluation are used.
Nonsampling risk is the risk that the auditor reaches an incorrect conclusion for any reason not related to sampling risk. The two causes of nonsampling risk are the auditor’s failure to recognize exceptions and inappropriate or ineffective audit procedures.
An auditor might fail to recognize an exception because of exhaustion, boredom, or lack of understanding of what might constitute an exception. In the preceding example, assume three shipping documents were not attached to duplicate sales invoices in a sample of 100. If the auditor concluded that no exceptions existed, that is a nonsampling error. An ineffective audit procedure for detecting the exceptions in question would be to examine a sample of shipping documents and determine whether each is attached to a duplicate sales invoice, rather than to examine a sample of duplicate sales invoices to determine if shipping documents are attached.
Both probabilistic and nonprobabilistic sample selection fall under step 2. When using probabilistic sample selection, the auditor randomly selects items such that each population item has a known probability of being included in the sample. This process requires great care and uses one of several methods discussed shortly. In nonprobabilistic sample selection, the auditor selects sample items using nonprobabilistic methods that approximate a random sampling approach. Auditors can use one of several nonprobabilistic sample selection methods.
https://wn.com/Statistical_Sampling_And_Non_Statistical_Sampling_Probabilistic_Selection_|Cpa_Exam
IN this video I will discuss statistical and non-statistical sampling probabilistic selection.
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Explain the concept of representative sampling.
When selecting a sample from a population, the auditor strives to obtain a representative sample. A representative sample is one in which the characteristics in the sample are approximately the same as those of the population. This means that the sampled items are similar to the items not sampled. Assume a client’s internal controls require a clerk to attach a shipping document to every duplicate sales invoice, but the clerk fails to follow the procedure exactly 3 percent of the time. If the auditor selects a sample of 100 duplicate sales invoices and finds three are missing attached shipping documents, the sample is highly representative. If two or four such items are found in the sample, the sample is reasonably representative. If no or many missing items are found, the sample is nonrepresentative.
In practice, auditors never know whether a sample is representative, even after all testing is complete. (The only way to know if a sample is representative is to subsequently audit the entire population.) However, auditors can increase the likelihood of a sample being representative by using care in designing the sampling process, sample selection, and evaluation of sample results. A sample result can lead to an incorrect conclusion due to sampling error or nonsampling error. The risk of these two types of errors occurring is called sampling risk and nonsampling risk.
Sampling risk is the risk that an auditor reaches an incorrect conclusion because the sample is not representative of the population. Sampling risk is an inherent part of sampling that results from testing less than the entire population. For example, assume the auditor decided that a control is not effective if there is a population exception rate of 6 percent. Assume the auditor accepts the control as effective based on tests of the control with a sample of 100 items that had two exceptions. If the population actually has an 8 percent exception rate, the auditor incorrectly accepted the population because the sample was not sufficiently representative of the population.
Auditors have two ways to control sampling risk:
Adjust sample size
Use an appropriate method of selecting sample items from the population
Increasing sample size reduces sampling risk, and vice versa. At one extreme, a sample of all the items of a population has a zero sampling risk. At the other extreme, a sample of one or two items has an extremely high sampling risk.
Using an appropriate sample selection method increases the likelihood of representativeness. This does not eliminate or even reduce sampling risk, but it does allow the auditor to measure the risk associated with a given sample size if statistical methods of sample selection and evaluation are used.
Nonsampling risk is the risk that the auditor reaches an incorrect conclusion for any reason not related to sampling risk. The two causes of nonsampling risk are the auditor’s failure to recognize exceptions and inappropriate or ineffective audit procedures.
An auditor might fail to recognize an exception because of exhaustion, boredom, or lack of understanding of what might constitute an exception. In the preceding example, assume three shipping documents were not attached to duplicate sales invoices in a sample of 100. If the auditor concluded that no exceptions existed, that is a nonsampling error. An ineffective audit procedure for detecting the exceptions in question would be to examine a sample of shipping documents and determine whether each is attached to a duplicate sales invoice, rather than to examine a sample of duplicate sales invoices to determine if shipping documents are attached.
Both probabilistic and nonprobabilistic sample selection fall under step 2. When using probabilistic sample selection, the auditor randomly selects items such that each population item has a known probability of being included in the sample. This process requires great care and uses one of several methods discussed shortly. In nonprobabilistic sample selection, the auditor selects sample items using nonprobabilistic methods that approximate a random sampling approach. Auditors can use one of several nonprobabilistic sample selection methods.
- published: 23 Sep 2017
- views: 24176
19:54
How To Know Which Statistical Test To Use For Hypothesis Testing
Hi! My name is Kody Amour, and I make free math videos on YouTube. My goal is to provide free open-access online college math lecture series on YouTube using fr...
Hi! My name is Kody Amour, and I make free math videos on YouTube. My goal is to provide free open-access online college math lecture series on YouTube using free open-access resources. I rely on generous donations and ad revenue - a special thanks to everyone who helped this channel grow.
***Please only give if you have the financial ability to do so.***
Support this Amour Learning channel directly on Patreon: https://www.patreon.com/amourlearning
-------------------------------------------------------------------------------------------------------------------
Credit to all of the authors of all of the resources below that greatly helped influence this video. My newer videos are much more original than these videos.
Free open-access online math textbooks:
https://aimath.org/textbooks/approved-textbooks/
My favorite number theory textbooks:
Number Theory: In Context and Interactive by Dr. Karl-Dieter Crisman: http://math.gordon.edu/ntic/
Elementary Number Theory:
Primes, Congruences, and Secrets by Dr. William Stein: https://wstein.org/ent/
A Computational Introduction to Number Theory and Algebra by Dr. Victor Shoup: https://shoup.net/ntb/
My favorite programming language:
SageMath (which in my view is categorically more productive than Python, R, Mathematica, Matlab, Maple, Magma, etc - if you're using any of these and they aren't working out, consider switching to Sage): https://www.sagemath.org/
A free in-depth tutorial for SageMath: https://doc.sagemath.org/html/en/tutorial/
Learn LaTeX in 30 minutes: https://www.overleaf.com/learn/latex/Learn_LaTeX_in_30_minutes
-------------------------------------------------------------------------------------------------------------------
My favorite math/science YouTube channels that I absolutely love (in no particular order):
Zach Star: https://www.youtube.com/channel/UCpCSAcbqs-sjEVfk_hMfY9w
Numberphile: https://www.youtube.com/channel/UCoxcjq-8xIDTYp3uz647V5A
3Blue1Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw
MIT OpenCourseWare: https://www.youtube.com/channel/UCEBb1b_L6zDS3xTUrIALZOw
Khan Academy: https://www.youtube.com/channel/UC4a-Gbdw7vOaccHmFo40b9g
PBS Infinite Series: https://www.youtube.com/channel/UCs4aHmggTfFrpkPcWSaBN9g
Lex Fridman: https://www.youtube.com/user/lexfridman There are plenty of methods for testing a hypothesis using statistics. When you are faced with a bunch of data, how do you know which test to use? Let's break down when to use each test in a simple way. Let's think how scientists think.
Support The Show On Patreon: https://www.patreon.com/kodyamour
-------------------------------------------------------------------------------------------------------------------
My name is Kody Amour, and I provide online math lectures to the public. My aim is to provide content that attends to a sound, productive conceptual understanding. Basically, I want to make sense, and I want my videos to be coherent with each other. If you think that these videos have helped you, please consider supporting this channel by subscribing, and please consider donating to this cause via Patreon!
Website: http://amourlearning.org/
Facebook: https://www.facebook.com/AmourLearning
Twitter: https://twitter.com/kodyamour
Udemy: https://www.udemy.com/user/kodyamour/
Linkedin: https://www.linkedin.com/in/kodyamour/
https://wn.com/How_To_Know_Which_Statistical_Test_To_Use_For_Hypothesis_Testing
Hi! My name is Kody Amour, and I make free math videos on YouTube. My goal is to provide free open-access online college math lecture series on YouTube using free open-access resources. I rely on generous donations and ad revenue - a special thanks to everyone who helped this channel grow.
***Please only give if you have the financial ability to do so.***
Support this Amour Learning channel directly on Patreon: https://www.patreon.com/amourlearning
-------------------------------------------------------------------------------------------------------------------
Credit to all of the authors of all of the resources below that greatly helped influence this video. My newer videos are much more original than these videos.
Free open-access online math textbooks:
https://aimath.org/textbooks/approved-textbooks/
My favorite number theory textbooks:
Number Theory: In Context and Interactive by Dr. Karl-Dieter Crisman: http://math.gordon.edu/ntic/
Elementary Number Theory:
Primes, Congruences, and Secrets by Dr. William Stein: https://wstein.org/ent/
A Computational Introduction to Number Theory and Algebra by Dr. Victor Shoup: https://shoup.net/ntb/
My favorite programming language:
SageMath (which in my view is categorically more productive than Python, R, Mathematica, Matlab, Maple, Magma, etc - if you're using any of these and they aren't working out, consider switching to Sage): https://www.sagemath.org/
A free in-depth tutorial for SageMath: https://doc.sagemath.org/html/en/tutorial/
Learn LaTeX in 30 minutes: https://www.overleaf.com/learn/latex/Learn_LaTeX_in_30_minutes
-------------------------------------------------------------------------------------------------------------------
My favorite math/science YouTube channels that I absolutely love (in no particular order):
Zach Star: https://www.youtube.com/channel/UCpCSAcbqs-sjEVfk_hMfY9w
Numberphile: https://www.youtube.com/channel/UCoxcjq-8xIDTYp3uz647V5A
3Blue1Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw
MIT OpenCourseWare: https://www.youtube.com/channel/UCEBb1b_L6zDS3xTUrIALZOw
Khan Academy: https://www.youtube.com/channel/UC4a-Gbdw7vOaccHmFo40b9g
PBS Infinite Series: https://www.youtube.com/channel/UCs4aHmggTfFrpkPcWSaBN9g
Lex Fridman: https://www.youtube.com/user/lexfridman There are plenty of methods for testing a hypothesis using statistics. When you are faced with a bunch of data, how do you know which test to use? Let's break down when to use each test in a simple way. Let's think how scientists think.
Support The Show On Patreon: https://www.patreon.com/kodyamour
-------------------------------------------------------------------------------------------------------------------
My name is Kody Amour, and I provide online math lectures to the public. My aim is to provide content that attends to a sound, productive conceptual understanding. Basically, I want to make sense, and I want my videos to be coherent with each other. If you think that these videos have helped you, please consider supporting this channel by subscribing, and please consider donating to this cause via Patreon!
Website: http://amourlearning.org/
Facebook: https://www.facebook.com/AmourLearning
Twitter: https://twitter.com/kodyamour
Udemy: https://www.udemy.com/user/kodyamour/
Linkedin: https://www.linkedin.com/in/kodyamour/
- published: 05 Sep 2019
- views: 774385