Step 1 of 4: Determine the three-period moving average for the next time period. If necessary, round your answer to one decimal place.   Step 2 of 4: Determine the three-period weighted moving average for the next time period with weights of 33 (most recent), 22 (second latest time period), and 11 (oldest time period). If necessary, round your answer to one decimal place.   Step 3 of 4: Determine the exponential smoothing forecast for the next time period using a smoothing constant of 0.500.50. If necessary, round your answer to one decimal place.   Step 4 of 4: Which forecasting method is best and why?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Step 1 of 4: Determine the three-period moving average for the next time period. If necessary, round your answer to one decimal place.
 
Step 2 of 4: Determine the three-period weighted moving average for the next time period with weights of 33 (most recent), 22 (second latest time period), and 11 (oldest time period). If necessary, round your answer to one decimal place.
 
Step 3 of 4: Determine the exponential smoothing forecast for the next time period using a smoothing constant of 0.500.50. If necessary, round your answer to one decimal place.
 
Step 4 of 4: Which forecasting method is best and why? 
 
 
 
 
 
 
Consider the following data:
Month
Profit ($)
Monthly Profit of an Auto Repair Shop
Sep-14
Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14
18,435 20,218
16,814
18,463
17,180 19,144
Jan-14
15,810 15,960 14,755
Transcribed Image Text:Consider the following data: Month Profit ($) Monthly Profit of an Auto Repair Shop Sep-14 Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14 18,435 20,218 16,814 18,463 17,180 19,144 Jan-14 15,810 15,960 14,755
O Comparing the forecasts, Weighted Moving Average is best since it has the highest forecast.
O Comparing the forecasts, Weighted Moving Average is best since it has the forecast closest to the latest actual observation.
O Comparing the MAD scores, Moving Average is best since the MAD score is highest.
O Comparing the MAD scores, Exponential Smoothing is best since the MAD score is lowest.
Transcribed Image Text:O Comparing the forecasts, Weighted Moving Average is best since it has the highest forecast. O Comparing the forecasts, Weighted Moving Average is best since it has the forecast closest to the latest actual observation. O Comparing the MAD scores, Moving Average is best since the MAD score is highest. O Comparing the MAD scores, Exponential Smoothing is best since the MAD score is lowest.
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