The following data show the demand (thousand units) of national cars for three seasons from year 2019 to 2021. Year Seasons 1 2 3 2019 50 80 110 2020 110 120 130 2021 170 210 250 a) Find the trend values using the moving average method. b) Calculate the seasonal index for each season. c) Forecast the demand of national cars in the second season of the year 2022.

Practical Management Science
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Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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QUESTION 3
The following data show the demand (thousand units) of national cars for three seasons
from year 2019 to 2021.
Year
Seasons
3
2019
50
80
110
2020
110
120
130
2021
170
210
250
a) Find the trend values using the moving average method.
b) Calculate the seasonal index for each season.
c) Forecast the demand of national cars in the second season of the year 2022.
Transcribed Image Text:QUESTION 3 The following data show the demand (thousand units) of national cars for three seasons from year 2019 to 2021. Year Seasons 3 2019 50 80 110 2020 110 120 130 2021 170 210 250 a) Find the trend values using the moving average method. b) Calculate the seasonal index for each season. c) Forecast the demand of national cars in the second season of the year 2022.
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