Sales data for two years are as follows. Data are aggregated with two months of sales in

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Sales data for two years are as follows. Data are aggregated with two months of sales in each “period.”

MONTHS MONTHS SALES SALES January-February March-April 109 104 150 170 120 100 115 112 January-February March-April 159

a. Plot the data.

b. Fit a simple linear regression model to the sales data.

c. In addition to the regression model, determine multiplicative seasonal index factors. A full cycle is assumed to be a full year. d. Using the results from parts (b) and (c), prepare a forecast for the next year.

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Operations and Supply Chain Management

ISBN: 978-0078024023

14th edition

Authors: F. Robert Jacobs, Richard Chase

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Question Posted: Apr 09, 2014 08:05 AM

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Sales data for two years are as follows. Data are aggregated with two months of sales in

Question:

MONTHS MONTHS SALES SALES January-February March-April 109 104 150 170 120 100 115 112 January-February March-April 159 182 May-June May-June July-August July-August 126 September-October November-December September-October November-December 106

Step by Step Answer:

a b c t y Average from same bimonthly period Seasonal factor Deseasonalized demand t 2 t y t desea...View the full answer

Operations and Supply Chain Management

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