The purpose of this script (run_analysis.R) is to collect and clean a data downloaded from web. The goal is to prepare tidy data set that can be used for later analysis. A complete description of the data used in this script can be found at The UCI Machine Learning Repository. Original data source can be downloaded from here.
The script should do the following:
- It 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 step 4, creates a second, independent tidy data set with the average of each variable for each activity and each subject.
The additional information on the variables can be found in the CodeBook.MD file.