Reconsider the previous six exercises and the Legos data fi le. This is very
unrealistic, but supposes that one of the products were to be offered at a
price of $0.

a. Would you expect this change to affect the least squares
line very much? Explain.

 b. For which one product would you expect this change to
have the greatest impact on the least squares line? Explain how you choose this

c. Change the price to $0 for the product that you
identified in part (b). Report the (new) equation of the least squares line and
the (new) value of r 2 . Have these values changed considerably?

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