:1. A scatter diagram is homoscedastic and football-shaped. The correlation coefficient is 0.8. The SD of the y-values in a narrow strip with x equal to 1 is equal to 1. The SD of the y-values in a narrow strip with x equal to 2 is approximately equal to a. 0.6
e. can't tell without knowing the SD's for the x's and the and the SD's for the y's.