The least-squares regression model ŷ = -3.4+5.2x and correlation coefficient r = -0.66 were calculated for a set of bivariate data with variables x and y. Which of the following is closest to the...

Extracted text: The least-squares regression model ŷ = -3.4+5.2x and correlation coefficient r = -0.66 were calculated for a set of bivariate data with variables x and y. Which of the following is closest to the proportion of the variation in y that cannot be explained by the explanatory variable? A 81% B 66% 56% 44% E 34%