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
1 264 --
2 257 264
3 286 257
4 297 286
5 316 297

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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