Show that the inherent multicollinearity problem with


Coding quantitative data

Use the coding system for observational data to fit a second-order model to the data on demand y and price p given in the following table.

Show that the inherent multicollinearity problem with fitting a polynomial model is reduced when the coded values of p are used.

DEMAND

DEMAND y, pounds

1,120

999

932

884

807

760

701

688

PRICE p, dollars

3.00

3.10

3.20

3.30

3.40

3.50

3.60

3.70

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Basic Statistics: Show that the inherent multicollinearity problem with
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