Question 325725
I was wondering if I can get help with this problem? 
A researcher reports that the correlation between two quantitative variables is r = 0.8. Which of the following statements is correct?
A) The explanatory variable (x) explains 80% of the variation in the response variable (y).
B) The average value of x changes by 0.8 when y is increased by 1.
C) The explanatory variable (x) explains 64% of the variation in the response variable (y).
D) The average value of y changes by 0.8 when x is increased by 1. 
Thanks,
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Answer: C
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Cheers,
Stan H.