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Operations management: Determine errors for forecast methods

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Two forecasting methods have been used to forecast the demand for a product. The following table shows the actual demand and the two forecasts for the product based on the two methods:

Forecasted Demand Based on:
Period
Actual
Demand Forecast Method 1 Forecast Method 2
1 68 66 66
2 75 68 68
3 70 72 70
4 74 71 72
5 69 72 74
6 72 70 76
7 80 71 78
8 78 74 80

A. Determine the following measures of error for each forecast method: ME, MAD, MSE, and MAPE. Fill the table on the answer sheet set.

B. Based on your answers to Part A, discuss the results AND determine which forecasting method is superior. Write your answer in the space provided in the answer-sheet set. Do NOT exceed 5 lines of answer and do not extend the box.

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Solution Summary

The solution determines errors for forecast methods.

Solution provided by:
Elisa Valdez, PhD
Education
  • Bachelor of Science in Business Administration, University of the Philippines
  • Master in Business Administration, Saint Mary's University
  • Doctor of Philosophy in Education, University of the Philippines
  • Doctor in Business Adminstration (IP), Polytechnic University of the Philippines
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