Question: 3.9. (Sec. 7.2) Show that (Note: When p = 1, the left-hand side is the average squared differences of the observations.) N N(N-1)(x-x) (x-x)'=(x*)(**)'.

3.9. (Sec. 7.2) Show that

N N(N-1)(x-x) (x-x)'=(x*)(**)'.

(Note: When p = 1, the left-hand side is the average squared differences of the observations.)

N N(N-1)(x-x) (x-x)'=(x*)(**)'.

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