Working Procedure:

1. Download the data into the current folder
2. Load the three pieces of data
3. Bind the data together
4. Select the specific pieces of data to create tidy data
5. Rename the tidy data
6. Generate the mean of tidy data for each subject and activity
7. Write the result into res.txt file

Code Book:

• activity_labels - a table for code:activity
• features - a table for n:fatures
• data - original combined data
• tidy_data - specific data selected
• res - result data generated