#statistics the useful info of wearable device, data come from the project: https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip #the script is run_analysis.R, the description of the script is CodeBook.md, README.md is the info of the script #the function of the script is:
- Merges the training and the test sets to create one data set , including the label
- Extracts the mean and standard deviation for each kind of feature
- Uses descriptive activity names to name the activities in the data set
- Output the mean for every activity label