A researcher wants to determine if a person's height affects whether the person is an avid reader. The plot below shows the relationship between height, in inches, and the number of books read in the past year. The linear regression output is given below. 25 125 100 75 50 Number of books read in past year 25 25 . Regression Statistics Multiple R 0.445282 R Square 0.198276 Adjusted R Square 0.169643 Standard Error 20.19147 Observations 30 50 50 Height (in inches) 55 60 65 70 75 R = = Ex: 0.654321 Height explains how much of the variance in number of books read?