ASQ Exam CSSBB Topic 5 Question 105 Discussion

Actual exam question for ASQ's CSSBB exam

Question #: 105
Topic #: 5

An x-bar and R chart is used to monitor a process. One week ago a new type of raw material was introduced and since that time 60 points have been plotted on the xbar chart and all are in the middle third of the chart. The corresponding 60 points on the R chart are all below the average range. This indicates that:

Athe operator has been plotting the points incorrectly

Bit is time to recalibrate the gage used

Cit is time to recalculate the control limits

Dthe material manager should be asked to go back to the previous raw material so the charts will more accurately reflect the process

Show Suggested Answer

Suggested Answer: C

by Valda at Jan 10, 2025, 10:38 PM

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Phyliss

2 days ago

Hmm, I'm thinking it's time to recalibrate the gage. Can't have a wonky gauge messing up the charts, now can we?

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Rhea

2 days ago

I disagree. I think the answer is B) it is time to recalibrate the gage used. The issue might be with the measurement instrument rather than the control limits.

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Lawrence

3 days ago

I agree with Mitsue. The points on the x-bar and R chart being in the middle third and below the average range indicate a need to recalculate the control limits.

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