The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. - 23 + 12x, + 6x2 The data used to develop the model came from a survey of 10 stores; for those data, SST - 18,000 and SSR - 13,500. (a) For the estimated regression equation given, compute R2. R2 - (b) Compute R,2. (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 nearest integer.) The adjusted coefficient of determination shows that |% of the variability has been explained by the two independent variables; thus, we conclude that the model -Select- v explain a large amount of variability.

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The following estimated regression equation relating sales to inventory investment and advertising expenditures was given.
ý = 23 + 12x, + 6x2
The data used to develop the model came from a survey of 10 stores; for those data, SST = 18,000 and SSR = 13,500.
(a) For the estimated regression equation given, compute R2.
R2 =
(b) Compute R_2. (Round your answer to two decimal places.)
R2 -|
(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 nearest integer.)
The adjusted coefficient of determination shows that
| % of the variability has been explained by the two independent variables; thus, we conclude that the model --Select-- v explain a large amount of variability.
Transcribed Image Text:The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. ý = 23 + 12x, + 6x2 The data used to develop the model came from a survey of 10 stores; for those data, SST = 18,000 and SSR = 13,500. (a) For the estimated regression equation given, compute R2. R2 = (b) Compute R_2. (Round your answer to two decimal places.) R2 -| (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 nearest integer.) The adjusted coefficient of determination shows that | % of the variability has been explained by the two independent variables; thus, we conclude that the model --Select-- v explain a large amount of variability.
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