State SAT scores. The correlation between the average SAT Mathematics score in the states and the proportion
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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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Related Book For
Statistics Concepts And Controversies
ISBN: 9781429277761
7th Edition
Authors: David S Moore, William I Notz
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