The run_analysis.R scripts do following tasks

1 Merges the training and the test sets to create one data set. 2 Extracts only the measurements on the mean and standard deviation for each measurement. 3 Uses descriptive activity names to name the activities in the data set 4 Appropriately labels the data set with descriptive activity names. 5 From the data set in step 4, creates a second, independent tidy data set with the average of each variable for each activity and each subject. The dataset from step 4 is 'tidy_data_set_txt'

Provided data from the 'Human Activity Recognition Using Smartphones Dataset':

https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip

The package 'dplyr' is required to handle the data.