Question

15.12 State SAT scores. The correlation between the average SAT Mathematics score in the states and the percent of high school seniors who take the SAT is

r

=

−0.89

r=−0.89

.

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

(b) How well does proportion taking predict average score? (Use

r

2

r2

in your answer.)

Answer 1

Answer:Answer: A negative correlation shows the relationship between two variables.

Step-by-step explanation: A) the correlation between the average SAT scores and percentage of high school seniors r = - 0.89 shows that the direction is negative and the relationship is strong.

B) SAT score = (-0.89 * proportion taking) + average score