Examine the procedure in equations (4.9) through (4.12).

(a) The term bxi is essentially inert throughout this procedure. Why?

(b) Imagine applying this procedure to the sum of squared errors in equation

(11.15). Considering the answer to part

a, what is likely to happen to bâ•›1x1i? To bâ•›2x2i?

(c) Apply this procedure to the sum of squared errors in equation (11.15) to derive equation (11.16).