ASQ Exam CSSBB Topic 4 Question 80 Discussion

Actual exam question for ASQ's CSSBB exam

Question #: 80
Topic #: 4

A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18. Find the control limits for the xbar chart.

A12.55 and 12.69

B12.11 and 13.13

C12.54 and 12.70

Dnone of the above

Show Suggested Answer

Suggested Answer: B

by Justine at Jan 25, 2024, 01:57 PM

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Meghann

24 hours ago

Wow, this question is really testing our understanding of statistical process control! I think the answer is C, but I'm not 100% sure.

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Reed

6 days ago

I'm not sure about the answer, but I think it makes sense to calculate the control limits based on the range and mean of sample means. I would go with A) as well.

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Linette

7 days ago

I agree with Ashton, the rationale behind it is that the control limits for xbar chart are calculated by adding and subtracting 3 times the range from the mean of sample means.

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Ashton

8 days ago

I think the answer is A) 12.55 and 12.69.

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Candida

10 days ago

I'm not sure about the answer, but I think we need to consider the formula for calculating control limits and make sure we apply it correctly.

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Stanton

12 days ago

I agree with Fletcher, the rationale behind it is that the control limits for an xbar chart are calculated by adding and subtracting 3 times the average range from the average of the sample means.

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Fletcher

17 days ago

I think the answer is A) 12.55 and 12.69.

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