Question: Verify that each of the terms in the sum-of-squares function (see Equation 9.9 on page 208) Sb y0 y ( y0 Xb ( b0

Verify that each of the terms in the sum-of-squares function (see Equation 9.9 on page 208)

SðbÞ ¼ y0 y ( y0 Xb ( b0 X0 y þ b0 X0 Xb is (1 · 1), justifying writing SðbÞ ¼ y0 y ( ð2y0 XÞb þ b0

ðX0 XÞb

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