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ASQ Exam CSSBB Topic 4 Question 80 Discussion

Actual exam question for ASQ's CSSBB exam
Question #: 80
Topic #: 4
[All CSSBB Questions]

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.

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Suggested Answer: B

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

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Olga
25 days ago
A or C, definitely. I can't imagine the control limits being as wide as 12.11 to 13.13. That's like a whole point of variation!
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Asha
26 days ago
Hmm, I'm leaning towards B. The range data seems important, and that answer looks like it takes that into account.
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Meghann
1 months 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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Basilia
8 days ago
Let's go with C then, it seems like the most likely option.
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Charolette
9 days ago
I calculated it and got the same result, C is correct.
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Oliva
22 days ago
I agree, I also think the answer is C.
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Lashon
1 months ago
User1: I think the answer is A) 12.55 and 12.69
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Reed
1 months 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
1 months 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
2 months ago
I think the answer is A) 12.55 and 12.69.
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Candida
2 months 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
2 months 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
2 months ago
I think the answer is A) 12.55 and 12.69.
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