title	output
Creating and documenting a Tidy Data Set	html_document

This repository includes the following:

• This file -- README.md

• The R code to create the tidy dataset -- run_analysis.R

• The codebook showing the new dataset and info about the source data as well. -- CodeBook.md

Explanation of run_analysis.R file

The following steps were performed in the R file to create the tidy data set:

• setup for Windows 7 OS

• Download and unzip zipped data

• read all the data into R

• Set column names in main data sets

• Find the columns whose names contain "mean" or "std"

• select only the columns indicating means or standard deviations

• add columns for Subject and Activities

• Combine test and train data by rows into one large data set

• Name the first two columns that contain Activities and Subjects

• Provide nice variable names to the columns

• Change data frame to a data table with Activities and Subjects as keys

• Change Activities and Subjects to factors

• Create tidy data set with means for each variable by Activities and Subject