ASQ CSSBB Exam - Topic 5 Question 105 Discussion

Actual exam question for ASQ's CSSBB exam

Question #: 105
Topic #: 5

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.A customer requires that SPC charts be done on their forms which have spaces for only 5 readings per sample. In preparation for calculating the new control limits the following question is asked, ''Will the new average range be larger or smaller than the current average range?''. The answer is:

Ayes

Bno

Cmaybe

Dsmaller

Elarger

Fsame size

Gnone of the above

Show Suggested Answer

Suggested Answer: C

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

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Cassi

6 months ago

Totally agree, smaller makes sense!

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Marcelle

6 months ago

Wait, how can we be sure it’ll be smaller?

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Arlean

6 months ago

Definitely smaller! Less data means less variability.

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Tambra

7 months ago

I think it’ll be smaller with only 5 readings.

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Lavera

7 months ago

The current average range is 0.18.

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Gladis

7 months ago

From what I recall, smaller sample sizes often lead to a larger average range, so I might go with "larger" for this question.

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Yolando

7 months ago

I'm a bit confused about this one. I feel like it could go either way, but I lean towards smaller since we're taking fewer readings.

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Lachelle

7 months ago

I think I practiced a similar question where the average range was affected by sample size, and it was smaller with fewer readings.

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Hoa

8 months ago

I remember that when you reduce the sample size, the average range usually decreases, but I'm not entirely sure how it applies here.

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Lavonna

8 months ago

Alright, I've got it. The range is the difference between the highest and lowest values in the sample. With fewer readings, the range is likely to be greater, so the new average range will be larger.

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Fausto

8 months ago

I think the key here is understanding how the range is calculated and how it's related to the number of readings per sample. If the number of readings goes down, the range should go up, so the new average range will be larger.

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Heike

8 months ago

I'm a bit confused here. Wouldn't reducing the number of readings per sample actually increase the range? I'll need to double-check the formulas for range and how that's affected by sample size.

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Blair

8 months ago

Okay, let's see. The current average range is 0.18 with 8 readings per sample. If we reduce to 5 readings per sample, the range should decrease, so the new average range will be smaller.

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Skye

8 months ago

Hmm, this seems like a tricky one. I'll need to think through the relationship between the number of readings per sample and the range.

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Gary

1 year ago

Wait, is this a trick question? I'm going to guess C) maybe, just to keep the exam folks on their toes.

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Cyndy

11 months ago

I'm not sure, it could be larger

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Theron

11 months ago

I think it might be smaller

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Fanny

12 months ago

Maybe

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Sunny

1 year ago

This is a classic case of overthinking it. The answer is clearly D) smaller. Fewer readings means less variability within each sample.

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Tayna

12 months ago

So, the new average range will definitely be smaller than the current average range.

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Lashonda

1 year ago

I agree, having only 5 readings per sample will reduce the variability, making the average range smaller.

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Gerald

1 year ago

I think the answer is D) smaller. With fewer readings per sample, the range is likely to be smaller.

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Bok

1 year ago

Hmm, I'm not sure about this one. I'll go with F) same size, just to play it safe.

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Thomasena

1 year ago

This is a tricky one. I'm going with E) larger. Reducing the number of readings per sample is likely to increase the variability within each sample, leading to a larger average range.

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