Question: solve them a to g and write the formulas that you used because I have to use Excel IE 375 - Production Planning Homework Assignment
IE 375 - Production Planning Homework Assignment 1 - October 10 The past demand data for taxi rides at Bilkent Campus is given in the following table. (a) (10 points) Use the moving averages method to forecast the demand in periods 1130. taking into account the latest demand information. Find the value of N{5,7,10} that minimizes the MAD calculated via the forecast errors in periods 1130. (b) (10 points) Use the exponential smoothing method to forecast the demand in periods 1130, taking into account the latest demand information. Use the demand observations in periods 110 to initialize F11. Find the value of {0.1,0.2,0.3} that minimizes the MAD calculated via the forecast errors in periods 1130. (c) (20 points) Use Holt's method to forecast the demand in periods 1130, taking into account the latest demand information. Use the demand observations in periods 110 to initialize S10 and G10. Assume =0.1. Find the value of {0.1,0.2,0.3} that minimizes the MAD calculated via the forecast errors in periods 1130. (d) (20 points) Use Winter's method to forecast the demand in periods 1130, taking into account the latest demand information. Use Winter's initialization procedure with the demand observations in periods 1-10 to initialize S10,G10,c6,c7,c8,c9, and c10. Assume =0.1. Find the values of {0.1,0.2,0.3} and {0.1,0.2} that minimize the MAD calculated via the forecast errors in periods 1130. (e) (20 points) Answer the question in part (d) with a different initialization procedure: First deseasonalize the series from period 1 to 10 and then fit a simple linear regression. (f) (20 points) Which of the above methods yields the least MAD? Forecast the total demand in week 7 with the best method and best parameter values you found
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