Coursera-Datacleaning

The script run_analysis.R does the following:

1. Loads data files from the UCI HAR Dataset - as long as it exists in the working directory
2. Merges the training and test data
3. Selects the mean and standard deviation variables
4. Transforms the variable names, removes () and changes - to _
5. Takes the mean value per subject-activity pair
6. Stores and writes the new data frame in dataMeans.txt in the working directory