Visualization

      Carefully review the slides in pages 22 ~ 39 of W7(Period2), and do the followings in Radiant and create a report in a word document 1. Visualization ◦Obtain scatter plots of Sales vs. Price, and Sales vs. Ads, and explain the relationship from your visual inspection of data ◦Obtain bar plots of Sales by Thanksgiving and Christmas, and explain and interpret the differences 2. Effects of control variables ◦Regress Sales on Price, then interpret the coefficient ◦Regress Sales on Price, Thanksgiving, then explain how coefficient changes ◦Regress Sales on Price, Thanksgiving, Christmas then explain how coefficient changes ◦Repeat this for Ad Spend instead of Price 3. Regression analysis