Quarterly data for the failures of certain aircraft engines at a local military base during the last two years are 200, 250, 175, 186, 225, 285, 305, 190. Both three-quarter and six-quarter moving averages are used to forecast the numbers of engine failures. Determine the one-step-ahead forecasts for periods 4 through 8 using three-period moving averages, and the one-step-ahead forecasts for periods 7 and 8 using six-period moving averages.

Quarterly data for the failures of certain aircraft engines at a local military base during the last two years are 200, 250, 175, 186, 225, 285, 305, 190. Both three-quarter and six-quarter moving averages are used to forecast the numbers of engine failures. Determine the one-step-ahead forecasts for periods 4 through 8 using three-period moving averages, and the one-step-ahead forecasts for periods 7 and 8 using six-period moving averages.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter13: Regression And Forecasting Models

Section13.3: Simple Regression Models

Problem 2P: The file P13_02.xlsx contains five years of monthly data on sales (number of units sold) for a...

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