Question: Quarterly sales of a department store for the years 2018 and 2020 are(millions): 29 43 20 25 35 44 28 48 24 37 39 56 Assuming the additive decomposition model for this time series is appropriate the answer the following questions by making excel spread sheet. Compute four period moving averages. Compute centered moving averages. Calculate estimate of seasonal factors (sn, ) for each quarter. Compute deseasonalized sales. Compute estimates of cyclical factors. Compute estimates of irregular factors. Assuming the linear trend forecast the sales for each quarter of 2021. а. b. с. d. е. f. g.

Question: Quarterly sales of a department store for the years 2018 and 2020 are(millions): 29 43 20 25 35 44 28 48 24 37 39 56 Assuming the additive decomposition model for this time series is appropriate the answer the following questions by making excel spread sheet. Compute four period moving averages. Compute centered moving averages. Calculate estimate of seasonal factors (sn, ) for each quarter. Compute deseasonalized sales. Compute estimates of cyclical factors. Compute estimates of irregular factors. Assuming the linear trend forecast the sales for each quarter of 2021. а. b. с. d. е. f. g.

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter4: Linear Functions

Section4.3: Fitting Linear Models To Data

Problem 24SE: Table 6 shows the year and the number ofpeople unemployed in a particular city for several years....

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