The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. ý = 28 + 15x, + 8x2 The data used to develop the model came from a survey of 10 stores; for those data, SST = 17,000 and SSR = 13,260. (a) For the estimated regression equation given, compute R2. R2 = 0.78 2 (b) Compute R. (Round your answer to two decimal places.) (c) Does the model appear to explain a large amount of variability in the data? Explain. (For purposes of this exercise, consider an amount large if it is at least 55%. Round your answer to the near The adjusted coefficient of determination shows that 78 % of the variability has been explained by the two independent variables; thus, we conclude that the model does Select- does

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The following estimated regression equation relating sales to inventory investment and advertising expenditures was given.
ý = 28 + 15x, + 8x2
The data used to develop the model came from a survey of 10 stores; for those data, SST = 17,000 and SSR = 13,260.
(a) For the estimated regression equation given, compute R2.
R2 = 0.78
2
(b) Compute R. (Round your answer to two decimal places.)
(c) Does the model appear to explain a large amount of variability in the data? Explain. (For purposes of this exercise, consider an amount large if it is at least 55%. Round your answer to the near
The adjusted coefficient of determination shows that 78
% of the variability has been explained by the two independent variables; thus, we conclude that the model does
Select-
does
Transcribed Image Text:The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. ý = 28 + 15x, + 8x2 The data used to develop the model came from a survey of 10 stores; for those data, SST = 17,000 and SSR = 13,260. (a) For the estimated regression equation given, compute R2. R2 = 0.78 2 (b) Compute R. (Round your answer to two decimal places.) (c) Does the model appear to explain a large amount of variability in the data? Explain. (For purposes of this exercise, consider an amount large if it is at least 55%. Round your answer to the near The adjusted coefficient of determination shows that 78 % of the variability has been explained by the two independent variables; thus, we conclude that the model does Select- does
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