Question: You must do the necessary calculations in the answer cells. Simply providing a number in the answer cell will not receive any credit. Part 1:
You must do the necessary calculations in the answer cells. Simply providing a number in the answer cell will not receive any credit.
Part 1: Fill in the pink cells with forecasts. Round off to two decimal points.
| Part 1 | Demand | 3 Period Moving average | 5 period moving average | Exponential Smoothing Alpha= .1 | Exponential Smoothing Alpha= .4 |
| Day 1 | 2690.0 | ||||
| Day 2 | 2700.0 | pink | pink | ||
| Day 3 | 2750.0 | pink | pink | ||
| Day 4 | 2690.0 | pink | pink | pink | |
| Day 5 | 2780.0 | pink | pink | pink | |
| Day 6 | 2530.0 | pink | pink | pink | pink |
| Day 7 | 2660.0 | pink | pink | pink | pink |
| Day 8 | 2520.0 | pink | pink | pink | pink |
| Day 9 | 2540.0 | pink | pink | pink | pink |
| Day 10 | 2600.0 | pink | pink | pink | pink |
| Day 11 | 2700.0 | pink | pink | pink | pink |
| Day 12 | pink | pink | pink | pink |
Part 2: Fill in the yellow cells with measure of forecast error. Round off to two decimal places.
Period Demand Forecast
1 10316.0 10300.0
2 12443.0 10565.0
3 11717.0 10562.0
4 11035.0 10755.0
5 12173.0 11377.8
6 11015.0 11842.0
7 11039.0 11485.0
8 11934.0 11315.5
9 11972.0 11540.3
10 10518.0 11490.0
| Forecast | |
| CFE | yellow |
| MAD | yellow |
| MSE | yellow |
| MAPE | yellow |
Part 3: Answer the questions below. (forecast errors below are based on different data than that shown above.)
| Forecast A | Forecast B | Forecast C | |
| CFE | 22 | -22 | 1.5 |
| MAD | 11.5 | 14.5 | 12.6 |
| MSE | 145 | 169 | 156 |
| MAPE | 0.11 | -0.21 | 0.16 |
Question 1: Which measure of forecast error is incorrect. Identify the mistake by indicating both the measure of forecast error and the specific forecast (A, B, or C)
Question 2: Which forecast (A, B, or C) has the largest squared errors?
Question 3: Which forecast (A, B, or C) is the least 'biased'?
Grading Rubric
| points possible | points earned | |
|---|---|---|
| Part 1 | ||
| 3 pd MA | 12 | |
| 5 pd MA | 12 | |
| ES a=.1 | 12 | |
| ES a=.4 | 12 | |
| Part 2 | ||
| CFE | 7 | |
| MAD | 7 | |
| MSE | 7 | |
| MAPE | 7 | |
| Part 3 | ||
| Q1 | 8 | |
| Q2 | 8 | |
| Q3 | 8 | |
| Total | 100 | 0 |
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