Options - Parameters
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Charts   X and R, X and S, X, Zone, I-MR, Individuals, Moving Average, EWMA

Use to enter historical data for estimating m and s. For example, if you have a known process parameter or an estimate obtained from past data, you can enter these values. If you do not specify a value for m or s, Minitab estimates it from the data. You can omit or include certain subgroups when estimating parameters using Estimate.

Dialog box items

Mean: Enter the historical means as constants.

Standard deviation: Enter the historical standard deviations as constants.