30Sep

The value of R2, the coefficient of determination, is always between

(A) 0 and 1, including 0 and 1
(B) 0 and 1, excluding 0 and 1
(C) –1 and 1, including –1 and 1
(D) –1 and 1, excluding –1 and 1

0 and 1, including 0 and 1