Question: 13.33.* Using the graphical representation in Figure 13.10, explain why y i = yi + b( x xi), where b is the estimated slope.

13.33.* Using the graphical representation in Figure 13.10, explain why y

i

= yi

+ b( ¯x − ¯xi), where b is the estimated slope. So, when b > 0, yi is adjusted upward if ¯x > ¯xi and adjusted downward if ¯xi < ¯x.

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