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Which of this is a situation when x bar and s charts should be utilized instead of x bar and R charts?

Which of this is a situation when x bar and s charts should be utilized instead of x bar and R charts? Correct Answer When sample size is variable

It is favorable to use the x bar and s charts over x bar and R charts when the sample size is variable. This is because when sample size is variable, it leads to a changing center line of R chart, which is difficult to interpret.

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Dot Situation mcq question image
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Dot Situation mcq question image
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