Question: State SAT scores. The correlation between the average SAT Mathematics score in the states and the proportion of high school seniors who take the SAT

State SAT scores. The correlation between the average SAT Mathematics score in the states and the proportion of high school seniors who take the SAT is r = −0.85.

(a) The correlation is negative. What does that tell us?

(b) How well does proportion taking predict average score? (Use r2 in your answer.)

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