The following steps are performed:
- Merges the training and the test sets to create 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.
- From the data set in step 4, creates a second, independent tidy data set with the average of each variable for each activity and each subject.
This codebook descripes the variables in the tidy data set produced by the run-analysis script. The origin of the data is located at: https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip
- 1 Subject
- 2 Activity
- 3 TimeBodyAccMeanX
- 4 TimeBodyAccMeanY
- 5 TimeBodyAccMeanZ
- 6 TimeBodyAccStdX
- 7 TimeBodyAccStdY
- 8 TimeBodyAccStdZ
- 9 TimeGravityAccMeanX
- 10 TimeGravityAccMeanY
- 11 TimeGravityAccMeanZ
- 12 TimeGravityAccStdX
- 13 TimeGravityAccStdY
- 14 TimeGravityAccStdZ
- 15 TimeBodyAccJerkMeanX
- 16 TimeBodyAccJerkMeanY
- 17 TimeBodyAccJerkMeanZ
- 18 TimeBodyAccJerkStdX
- 19 TimeBodyAccJerkStdY
- 20 TimeBodyAccJerkStdZ
- 21 TimeBodyGyroMeanX
- 22 TimeBodyGyroMeanY
- 23 TimeBodyGyroMeanZ
- 24 TimeBodyGyroStdX
- 25 TimeBodyGyroStdY
- 26 TimeBodyGyroStdZ
- 27 TimeBodyGyroJerkMeanX
- 28 TimeBodyGyroJerkMeanY
- 29 TimeBodyGyroJerkMeanZ
- 30 TimeBodyGyroJerkStdX
- 31 TimeBodyGyroJerkStdY
- 32 TimeBodyGyroJerkStdZ
- 33 TimeBodyAccMagMean
- 34 TimeBodyAccMagStd
- 35 TimeGravityAccMagMean
- 36 TimeGravityAccMagStd
- 37 TimeBodyAccJerkMagMean
- 38 TimeBodyAccJerkMagStd
- 39 TimeBodyGyroMagMean
- 40 TimeBodyGyroMagStd
- 41 TimeBodyGyroJerkMagMean
- 42 TimeBodyGyroJerkMagStd
- 43 FrequencyBodyAccMeanX
- 44 FrequencyBodyAccMeanY
- 45 FrequencyBodyAccMeanZ
- 46 FrequencyBodyAccStdX
- 47 FrequencyBodyAccStdY
- 48 FrequencyBodyAccStdZ
- 49 FrequencyBodyAccJerkMeanX
- 50 FrequencyBodyAccJerkMeanY
- 51 FrequencyBodyAccJerkMeanZ
- 52 FrequencyBodyAccJerkStdX
- 53 FrequencyBodyAccJerkStdY
- 54 FrequencyBodyAccJerkStdZ
- 55 FrequencyBodyGyroMeanX
- 56 FrequencyBodyGyroMeanY
- 57 FrequencyBodyGyroMeanZ
- 58 FrequencyBodyGyroStdX
- 59 FrequencyBodyGyroStdY
- 60 FrequencyBodyGyroStdZ
- 61 FrequencyBodyAccMagMean
- 62 FrequencyBodyAccMagStd
- 63 FrequencyBodyBodyAccJerkMagMean
- 64 FrequencyBodyBodyAccJerkMagStd
- 65 FrequencyBodyBodyGyroMagMean
- 66 FrequencyBodyBodyGyroMagStd
- 67 FrequencyBodyBodyGyroJerkMagMean
- 68 FrequencyBodyBodyGyroJerkMagStd