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IASSC ICBB Exam - Topic 4 Question 90 Discussion

Actual exam question for IASSC's ICBB exam
Question #: 90
Topic #: 4
[All ICBB Questions]

The reported Cpk for a process with an average of 98 units, a spread of 16 units and upper and lower specification limits of 115 and 90 units would be?

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Suggested Answer: C

by Louvenia at May 03, 2025, 09:44 PM

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Lottie
4 months ago
The average is too close to the lower limit for a high Cpk.
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Leoma
4 months ago
I think it's definitely not 1.25!
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Renato
5 months ago
I agree, 0.75 seems right based on the spread.
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Aretha
5 months ago
Surprised by the options, thought it would be higher.
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Jenelle
5 months ago
Cpk is calculated using the formula (USL - mean) / (3 * sigma).
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Rasheeda
5 months ago
I think the answer might be 0.75, but I’m not entirely confident. I wish I had reviewed the Cpk examples more thoroughly.
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Raina
6 months ago
I feel like the Cpk should be less than 1 since the average is closer to the lower limit. But I can't recall the exact calculation.
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Romana
6 months ago
This question seems similar to the practice problems we did last week. I think I need to find the standard deviation first.
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Nguyet
6 months ago
I remember we calculated Cpk in class, but I'm not sure if I got the formula right for this one.
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Serina
6 months ago
Ugh, I hate these process capability questions. The formulas always trip me up. I'll give it my best shot, but I'm not feeling super confident about this one.
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Clemencia
6 months ago
Alright, time to put my process improvement skills to the test! I've got the Cpk formula down, so I just need to plug in the numbers and see which answer choice matches.
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Lucina
7 months ago
Hmm, I'm a bit unsure about this one. I know Cpk has something to do with process capability, but I'm not totally confident I can calculate it correctly. Maybe I should review the formulas before attempting this.
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Teri
7 months ago
Okay, this looks like a question on process capability. I think I can handle this - I just need to remember the Cpk formula and plug in the values.
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Mose
11 months ago
Actually, the correct answer is D) 1.25. The Cpk value indicates how well a process can meet the specifications, and in this case, it exceeds 1.00.
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Rory
11 months ago
This question is making my head spin. I need to remember the Cpk formula - something about standard deviations and spec limits. You know what, I'm just going to go with D) 1.25 and hope the examiner has a sense of humor.
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Lura
10 months ago
I'll go with B) 0.75 and hope for the best. Good luck to all of us!
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Bettina
10 months ago
I remember Cpk is a measure of process capability, but I'm not sure about the exact calculation.
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Gracia
11 months ago
Yeah, it's a bit confusing. I'm going with D) 1.25 and hoping for the best.
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Lilli
11 months ago
I think the Cpk formula involves standard deviations and spec limits.
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Orville
11 months ago
Hey, isn't Cpk just another way of saying 'Can't Possibly Know'? I'm going to go with B) 0.75 and hope for the best. At least it's not as bad as E) 'Completely Perplexed'.
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Alecia
12 months ago
I'm not sure, but I think the Cpk value should be higher than 1.00 for a good process capability.
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Stephane
12 months ago
Okay, let's break this down. If the process average is 98 and the spread is 16, that means the process is well within the spec limits. I'd say the Cpk has got to be 1.25. Nailed it!
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Nakita
11 months ago
Actually, the Cpk would be 1.00. The process is well within the spec limits.
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Lonny
11 months ago
I agree with you, the Cpk would be 0.75 in this case.
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Lenny
11 months ago
I think it's actually 0.75. The process is not quite hitting the upper spec limit.
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Sabina
12 months ago
Wait, wasn't Cpk something to do with how well your process is centering between the spec limits? I'm pretty sure the answer is C) 1.00. Gotta love those statistics questions, am I right?
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Gaston
12 months ago
I think the answer is C) 1.00.
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Glenn
12 months ago
Hmm, let me think about this. The spread is 16 units, and the spec limits are 115 and 90 units. I think that's going to give us a Cpk value of around 1.00. Sounds about right to me.
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Margart
10 months ago
Yes, the Cpk value of 1.00 seems to make sense given the average, spread, and spec limits.
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Cordell
11 months ago
I think you're right, the Cpk value is likely 1.00 based on the given information.
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Cherry
11 months ago
I agree, the Cpk value should be around 1.00 with those specifications.
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