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 __________.

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

I picked D 1.21

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.

posted by MathGuru
2. Thanks again MathGuru

posted by Stuart

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