# Question

In exercise 4, the following estimated regression equation relating sales to inventory investment and advertising expenditures was given.

y = 25 + 10x1 + 8x2

The data used to develop the model came from a survey of 10 stores; for those data, SST = 16,000 and SSR = 12,000.

a. For the estimated regression equation given, compute R2.

b. Compute R2a.

c. Does the model appear to explain a large amount of variability in the data? Explain.

y = 25 + 10x1 + 8x2

The data used to develop the model came from a survey of 10 stores; for those data, SST = 16,000 and SSR = 12,000.

a. For the estimated regression equation given, compute R2.

b. Compute R2a.

c. Does the model appear to explain a large amount of variability in the data? Explain.

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