10 math problems

19Jan 2022 by

QUESTION 1

Which of the following is a true statement regarding correlation and causality?

A.

A high correlation always implies causality.

B.

A high correlation does not necessarily mean causality.

C.

Correlation and causality always go together.

D.

Correlation and causality never go together.

2 points   

QUESTION 2

If the correlation coefficient is r = .9, find the coefficient of determination r 2.

A.

r 2 = .81 which is .92.

B.

r 2 is equal to r, which is .9.

C.

r 2 = 0 since r