There 2 new variables added to both tidy data sets:
- subject (number of subjects: 1 to 30)
- NameActivity (descriptive activity names: 1 WALKING 2 WALKING_UPSTAIRS 3 WALKING_DOWNSTAIRS 4 SITTING 5 STANDING 6 LAYING
- trainx, trainy, testx, testy, subjectrain and subjectest contain the data from the downloaded files.
- trainxtestx, trainytestz merge the previous datasets to further analysis.
File with R code "run_analysis.R" perform 5 following steps (in accordance assigned task of course work):
- Merging the training and the test sets to create one data set.
- Extracting only measurements on the mean and standard deviation for each measurement
- Using descriptive activity names to name activities
- Labeling the data set with descriptive variable names
- Creation of an independent tidy data set with the average of each variable for each activity and each subject