• run_analysis.R : Script doing the analyzis
• tidy.txt : Result geerated by cript
• CodeBook.md : File with detailed data description

run_analysis.R scripts creates final dataset tidy.txt. Final dataset was created by joining train and test datasets together. From X_ files only mean and standard deviation mesures were selected. New columns subject (based on joined subject_ files) and activity (based on joined y_ files) were added. Activity column labels were changes based on activity_labels.txt file. Column names were changed based on features.txt. Final dataset contains summarization averages of each variable for each activity and each subject.