(a) Supposing that a simple regression has quantities yi y 2 631:63 and ^e2 i 182:85, find R2. (b) Suppose that a simple

(a) Supposing that a simple regression has quantities
ðyi yÞ

2 ¼ 631:63 and

^e2 i ¼ 182:85, find R2.

(b) Suppose that a simple regression has quantities N ¼ 20,
y2 i ¼ 5930:94, y ¼ 16:035, and SSR ¼ 666:72, find R2.

(c) Suppose that a simple regression has quantities R2 ¼ 0:7911, SST ¼ 552:36, and N ¼ 20, find s^2.