Running run_analysis.R (needs to be in the folder UCI HAR Dataset, data from https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip) generates two .txt file:

1. mergeALL.txt is the merging of both test and train datasets, only looking at mean() and std() factors from the original datasets
2. summaryMerge.txt summarizes the average of each mean() and std() factors by subject and activity

dplyr