A forecaster used the regression equation Qt= a + bt+q₁D₁ + c2D2 + c3D3 and quarterly sales data for 2004/-2021/V(t = 1, ..., 64) for an appliance manufacturer to obtain the results shown below. Qis quarterly sales, and D₁, D₂ and D3 are dummy variables for quarters I, II, and III. DEPENDENT VARIABLE: QT R-SQUARE OBSERVATIONS: 64 0.8768 VARIABLE INTERCEPT T D1 D2 D3 F-RATIOP-VALUE ON F 10.0 25.0 40.0 107.982 0.0001 PARAMETER STANDARD ESTIMATE 30.0 1.5 ERROR T-RATIO 12.80 2.34 0.70 2.14 3.00 3.33 7.20 3.47 15.80 2.53 In any given year, quarterly sales tend to vary as follows: P-VALUE 0.0224 0.0362 0.0015 0.0010 0.0140

A forecaster used the regression equation Qt= a + bt+q₁D₁ + c2D2 + c3D3 and quarterly sales data for 2004/-2021/V(t = 1, ..., 64) for an appliance manufacturer to obtain the results shown below. Qis quarterly sales, and D₁, D₂ and D3 are dummy variables for quarters I, II, and III. DEPENDENT VARIABLE: QT R-SQUARE OBSERVATIONS: 64 0.8768 VARIABLE INTERCEPT T D1 D2 D3 F-RATIOP-VALUE ON F 10.0 25.0 40.0 107.982 0.0001 PARAMETER STANDARD ESTIMATE 30.0 1.5 ERROR T-RATIO 12.80 2.34 0.70 2.14 3.00 3.33 7.20 3.47 15.80 2.53 In any given year, quarterly sales tend to vary as follows: P-VALUE 0.0224 0.0362 0.0015 0.0010 0.0140

Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)

14th Edition

ISBN:9781305506381

Author:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris

Publisher:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris

Chapter4A: Problems In Applying The Linear Regression Model

Section: Chapter Questions

Problem 2E

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