: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 

 	
  b. 1 

 c. 0.8

 d. 2

 e. can't tell without knowing the SD's for the x's and the  
      and the SD's for the y's.