Question: Please help me out and if possible please give me an explanation on how to do the control chart. I really appreciate for your help!!!
Please help me out and if possible please give me an explanation on how to do the control chart. I really appreciate for your help!!!
Joe Brown, an analyst for Elma Bakery, shared daily corn muffin sales and his forecasts for days 1 to 12 with you as given in the table below. Using the data in the table given below, answer the following questions:
| Day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Sales | 30 | 32 | 23 | 21 | 20 | 24 | 26 | 27 | 30 | 30 | 32 | 35 |
| Joe's Forecast | 31 | 29 | 16 | 25 | 25 | 18 | 31 | 25 | 27 | 40 | 28 | 34 |
Part I: Build a control chart to monitor Joe Browns forecast errors for days 1 to 12 (use 3 standard deviation control limits). Plot the forecast errors on the control chart you build.
Part II: : Using the control chart you plot in part (I), discuss whether Joes forecast errors are in control or not.
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