The x-bar and EWMA charts are fairly robust to non-normality of the measured dat
ID: 3382015 • Letter: T
Question
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.
Explanation / Answer
Plotted points are not independent. But fairly robust to exponential assumption.
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