Refer to the quarterly appliance sales data given in the following table. Consider the following model: Sales

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Refer to the quarterly appliance sales data given in the following table. Consider the following model:

Salesi = α1 + α2D2i + α3D3i + α4D4i + ui

WASH DISH DISP FRIG DUR DISH DISP FRIG WASH DUR 841 798 1317 1271 252.6 480 706 943 1036 247.7 1295 582 1175 249.1 957 8

where the D€™s are dummies taking 1 and 0 values for quarters II through IV.

a. Estimate the preceding model for dishwashers, disposers, and washing machines individually.

b. How would you interpret the estimated slope coefficients?

c. How would you use the estimated α̂s to deseasonalize the sales data for individual appliances?

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Basic Econometrics

ISBN: 978-0073375779

5th edition

Authors: Damodar N. Gujrati, Dawn C. Porter

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