an economist is interested to see how consumption for an economy (in $ billions) is influenced by gross domestic product ($ billions) and aggregate price (consumer price index). the microsoft excel output of this regression is partially reproduced below. loading... click the icon to view the results. when the economist used a simple linear regression model with consumption as the dependent variable and gdp as the independent variable, he obtained an r value of 0.971. what additional percentage of the total variation of consumption has been explained by including aggregate prices in the multiple regression?
