An X-Bar Control Chart Was Examined and No Data Points

question 230

Multiple Choice

An x-bar control chart was examined and no data points fell outside of the limits. Can this process be considered in control?

• A) Not yet, there could be a pattern to the points.
• B) Not yet, the R-chart must be checked.
• C) Not yet, the number of samples must be known.
• D) Yes.
• E) Both A and B

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