Getting-and-Cleaning-Data-Assignment Step 1: Checking if archieve already exists. Step 2: Assigning all data frames Step 3: Merges the training and the test sets to create one data set Step 4: Uses descriptive activity names to name the activities in the data set. Step 5: Appropriately labels the data set with descriptive variable names. Step 6: Creates a second, independent tidy data set with the average of each variable for each activity and each subject