UESTION3 1. The table below shows the one-year sales data for a certain part. Month Demand Month Demand January Marc February March 138 July August September October 140 142 107 185 145 April May June 131 113 144 November 189 135 December 128 a. Compute the one-step-ahead 3-month and 6-month moving-average forecasts for July through December. b. Compute the MAD for the forecasts obtained in part (a). What effect does increasing N from 3 to 6 have on the forecasts? c. Use the arithmetic average of the first six months of data as a baseline to initialize the exponential smoothing. Compute the one-step-ahead exponential smoothing forecasts for July through December, assuming a = 0.25. d. Compare the accuracy of the forecasts obtained in part (c) with the one-step ahead six-month moving-average forecasts obtained in part (a).

UESTION3 1. The table below shows the one-year sales data for a certain part. Month Demand Month Demand January Marc February March 138 July August September October 140 142 107 185 145 April May June 131 113 144 November 189 135 December 128 a. Compute the one-step-ahead 3-month and 6-month moving-average forecasts for July through December. b. Compute the MAD for the forecasts obtained in part (a). What effect does increasing N from 3 to 6 have on the forecasts? c. Use the arithmetic average of the first six months of data as a baseline to initialize the exponential smoothing. Compute the one-step-ahead exponential smoothing forecasts for July through December, assuming a = 0.25. d. Compare the accuracy of the forecasts obtained in part (c) with the one-step ahead six-month moving-average forecasts obtained in part (a).

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 91E

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