I If the Coefficient of Correlation Is 0

Multiple Choice

i. If the coefficient of correlation is 0.80, what is the coefficient of determination? ii. What is a measure of the scatter of observed values around the regression line called?
iii. If the correlation between sales and advertising is + 0.6, what percent of the variation in sales can be attributed to advertising?

A) 0.4; standard deviation; 0.3.
B) 0.64; standard error of the estimate; 36%.
C) 0.64; standard error of the estimate; 60%.
D) 0.08; variation; 36%.
E) 0.4; standard error of the estimate; 60%.