The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. ŷ = 21 + 13x1 + 9x2 The data used to develop the model came from a survey of 10 stores; for those data, SST = 19,000 and SSR = 14,630. (a)For the estimated regression equation given, compute R2. R2 = 0.77 (b)Compute Ra2. (Round your answer to two decimal places.) Ra2 = ?? (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 ?? ( not 71)% of the variability has been explained by the two independent variables; thus, we conclude that the model does explain a large amount of variability.
The following estimated regression equation relating sales to inventory investment and advertising expenditures was given. ŷ = 21 + 13x1 + 9x2 The data used to develop the model came from a survey of 10 stores; for those data, SST = 19,000 and SSR = 14,630. (a)For the estimated regression equation given, compute R2. R2 = 0.77 (b)Compute Ra2. (Round your answer to two decimal places.) Ra2 = ?? (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 ?? ( not 71)% of the variability has been explained by the two independent variables; thus, we conclude that the model does explain a large amount of variability.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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The following estimated regression equation relating sales to inventory investment and advertising expenditures was given.
ŷ = 21 + 13x1 + 9x2
The data used to develop the model came from a survey of 10 stores; for those data, SST = 19,000 and SSR = 14,630.
(a)For the estimated regression equation given, compute R2.
R2 = 0.77
(b)Compute Ra2. (Round your answer to two decimal places.)
Ra2 = ??
(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 ?? ( not 71)% of the variability has been explained by the two independent variables; thus, we conclude that the model does explain a large amount of variability.
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