If the total variation in y values is 200, and the variation explained by regression line is 180, then the coefficient of determination is equal to __________.

Question

A) 1.11
B) 0.90
C) 0.81
D) 1.21

I picked D 1.21

Answer 1

I'll give you a hint:
Coefficient of Determination is explained variation divided by total variation (which is the correlation coefficient squared).

I'll let you take it from there.

Answer 2

Thanks again MathGuru