This tidy data is generated by transforming the dataset obtained fromthe url https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip
The subsetting and transformations include - Select only the columns that have -mean() and -std() have in their names - Combine the rows from training and test data set - Compute average values for each column based on unique combination of subject and activity the traning and test data set combined
subject - This column is number from 1-30 identifying the subject who took part in the experimental activity
activity - This column describes the type of activity the subject is involved in . Possible values include
WALKING
WALKING_UPSTAIRS
WALKING_DOWNSTAIRS
SITTING
STANDING
LAYING
Following columns represent average values of mean and standard deviation. The column names of these columns have been transformed by - Converting the column names to lower case - Removing charcaters - ( ) from the column name
The average values have been computed for these variables for a unique combination of subject and activity the traning and test data set combined
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