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.)

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

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

нιѕ яαтє ιѕ 1/4 σя .25 ριєѕ ρєя мιиυтє

нσρє ι ¢συℓ∂ нєℓρ уσυ.