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1. The quarterly sales data (number of copies sold) for a college textbook over the past 3 years are as follows in the Table below: QUARTERLY SALES Year 1 Quarter Year 2 Year 3 1 16 18 18 9. 9. 11 3 26 29 29 4 25 23 26 a) Compute seasonal indexes for the 4 quarters. b) When does the textbook publisher experience the largest change in sales? Does this result appear to be reasonable? Explain. c) Using the information on seasonality, compare a 4-quarter moving average to trend projection model and an exponential smoothing with a smoothing constant of 0.2. d) Use the selected model to generate a forecast for sales for the first quarter of Year 4

1. The quarterly sales data (number of copies sold) for a college textbook over the past 3 years are as follows in the Table below: QUARTERLY SALES Year 1 Quarter Year 2 Year 3 1 16 18 18 9. 9. 11 3 26 29 29 4 25 23 26 a) Compute seasonal indexes for the 4 quarters. b) When does the textbook publisher experience the largest change in sales? Does this result appear to be reasonable? Explain. c) Using the information on seasonality, compare a 4-quarter moving average to trend projection model and an exponential smoothing with a smoothing constant of 0.2. d) Use the selected model to generate a forecast for sales for the first quarter of Year 4

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1. The quarterly sales data (number of copies sold) for a college textbook over the past 3 years are as follows in the Table below: QUARTERLY SALES Year 1 Quarter Year 2 Year 3 16 18 18 9. 9. 11 3 26 29 29 25 23 26 a) Compute seasonal indexes for the 4 quarters. b) When does the textbook publisher experience the largest change in sales? Does this result appear to be reasonable? Explain. c) Using the information on seasonality, compare a 4-quarter moving average to trend projection model and an exponential smoothing with a smoothing constant of 0.2. d) Use the selected model to generate a forecast for sales for the first quarter of Year 4.
Transcribed Image Text:1. The quarterly sales data (number of copies sold) for a college textbook over the past 3 years are as follows in the Table below: QUARTERLY SALES Year 1 Quarter Year 2 Year 3 16 18 18 9. 9. 11 3 26 29 29 25 23 26 a) Compute seasonal indexes for the 4 quarters. b) When does the textbook publisher experience the largest change in sales? Does this result appear to be reasonable? Explain. c) Using the information on seasonality, compare a 4-quarter moving average to trend projection model and an exponential smoothing with a smoothing constant of 0.2. d) Use the selected model to generate a forecast for sales for the first quarter of Year 4.
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