Question: Using the forecast errors over a 9-month period in the chart below, determine within 2s limits if the process is in control and explain why

Using the forecast errors over a 9-month period

Using the forecast errors over a 9-month period in the chart below, determine within 2s limits if the process is in control and explain why they are or not in control. Month 1 2 3 4 5 6 Forecast Error -4 0 9 4 -8 -3 5 7 -2 7 8 9

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