Question: Consider the following Control Chart: . . . . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Consider the following Control Chart:
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The interpretation of the above control chart is:
Consider the following Control Chart:
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The interpretation of the above control chart is:
The original series has no pattern and qualitative forecasting should be used.
There is a pattern in the series.
The best model should be used for forecasting.
There are seasonality in the series.

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