SOLUTION: if r= 0.8,the variation in dependent variable Y due to independent variable X is about?

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Question 1192466: if r= 0.8,the variation in dependent variable Y due to independent variable X is about?
Answer by math_tutor2020(3817) About Me  (Show Source):
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r = 0.8
r^2 = (0.8)^2
r^2 = 0.64

64% of the variation in the dependent variable Y is explained by the variance in the independent variable X.

Answer: 64%