+ βx (E[y|x] , β ) x y x y E[y|x] σ x 2 α β ( ) ˆ y = a + bx (b ) SSresidual a b SSresidual = n i=1 e2 i = n i=1 (yi − ˆ yi )2 2023 13-14 — 2024-01-25 – p.16/30
MSresidual = SSresidual dfresidual = n i=1 (yi − ˆ yi )2 n − 2 b H0 : β = 0 ( β ) HA : β = 0 ( β ) Student t t = b MSresidual SS x = r n − 2 1 − r2 2023 13-14 — 2024-01-25 – p.19/30