The xbar and EWMA charts are fairly robust to nonnormality o

The x-bar and EWMA charts are fairly robust to non-normality of the measured data. What characteristic of the plotted values makes this possible? ________

This question pertains to SPC of quality control.

Thanks for any help you can provide. Can\'t find the answer in my book or notes.

The x-bar and EWMA charts are fairly robust to non-normality of the measured data. What characteristic of the plotted values makes this possible? ________

This question pertains to SPC of quality control.

Thanks for any help you can provide. Can\'t find the answer in my book or notes.

This question pertains to SPC of quality control.

Thanks for any help you can provide. Can\'t find the answer in my book or notes.

Plotted points are not independent. But fairly robust to exponential assumption.

The x-bar and EWMA charts are fairly robust to non-normality of the measured data. What characteristic of the plotted values makes this possible? ________ This

The xbar and EWMA charts are fairly robust to nonnormality o

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