project for coursera class "getting and cleaning data"
All the files present in this repo must be copied to R working directory for the script to run.
Running this script will: Merges the training and the test sets to create one data set. Extracts only the measurements on the mean and standard deviation for each measurement. Uses descriptive activity names to name the activities in the data set Appropriately labels the data set with descriptive variable names. From the data set in last step, creates a second, independent tidy data set with the average of each variable for each activity and each subject.