Question: Do not include anything other than numbers in your responses. For example, do not include comma or dollar sign in your numbers. As a rule
Do not include anything other than numbers in your responses. For example, do not include comma or dollar sign in your numbers. As a rule of thumb, keep 2 decimal places for larger numbers and 3 decimal places for smaller numbers less than 1.
Consider the following data. We want to monitor the forecasts.
| Period | Demand | Forecasts |
| 1 | 278 | -- |
| 2 | 257 | 278 |
| 3 | 285 | 257 |
| 4 | 295 | 285 |
| 5 | 300 | 295 |
Calculate the UCL and LCL for the appropriate control chart to control magnitude of errors? Calculate the cumulative error, MAD, and tracking signals of periods 2 through 5 and determine if the forecasts are biased. Keep two decimal places in your calculations .
| Period | Errors | Cumulative Errors | MADs | Tracking Signals |
| 1 | -- | -- | -- | -- |
| 2 | ... | ... | ... | |
| 3 | ... | ... | ||
| 4 | ... | |||
| 5 | ... |
Are forecast errors biased? (Yes/No) _____
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