The data represent data collected from the accelerometers from the Samsung Galaxy S smartphone.
A full description is available at the site where the data was obtained:
http://archive.ics.uci.edu/ml/datasets/Human+Activity+Recognition+Using+Smartphones
Data for the project:
https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip
R script called run_analysis.R does the following:
- Downloads and unpacks the data from the URL mentioned above.
- Merges the training and the test sets into 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.
- Creates a tidy data set with the average of each variable for each activity and each subject.