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IASSC ICBB Exam - Topic 3 Question 107 Discussion

A Lean Six Sigma project is attempting to reduce inventory days. The Process Capability will be monitored as part of the Control Phase to track the sustainability of the improvement. Which distribution type is best used for performing the Capability Analysis?
A) Weibull Distribution
B) Normal Distribution
C) Exponential Distribution
D) Logistic Distribution
E) Gaussian Distribution

IASSC ICBB Exam - Topic 3 Question 107 Discussion

Actual exam question for IASSC's ICBB exam
Question #: 107
Topic #: 3
[All ICBB Questions]

A Lean Six Sigma project is attempting to reduce inventory days. The Process Capability will be monitored as part of the Control Phase to track the sustainability of the improvement. Which distribution type is best used for performing the Capability Analysis?

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Suggested Answer: A

by Cammy at Jun 21, 2026, 05:10 PM

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Arlie
18 days ago
But what about Weibull? It’s good for life data analysis. Could be useful too.
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Mari
24 days ago
I agree, Normal Distribution fits most processes well. It’s reliable.
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Felicitas
29 days ago
I think Normal Distribution is the best choice. It's commonly used in capability analysis.
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Filiberto
1 month ago
Exponential could work too, depending on the context!
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Nidia
1 month ago
Not sure if Normal is always the best choice, what about skewed data?
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Barney
1 month ago
Wait, isn't Gaussian just another name for Normal?
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Socorro
2 months ago
Totally agree, Normal Distribution fits most processes!
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Eleonora
2 months ago
I think the Normal Distribution is the way to go for Capability Analysis.
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Refugia
2 months ago
I’m a bit confused about the Logistic Distribution; I don’t think we covered it much in class. Is it even applicable for Capability Analysis?
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Jolanda
2 months ago
I practiced a similar question where the Normal Distribution was the answer, so I’m leaning towards that one for this question too.
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Ilda
2 months ago
I think the Exponential Distribution might come into play for processes with time between events, but I can't recall if that's relevant here.
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Kristofer
3 months ago
I remember we talked about the Normal Distribution being commonly used for Capability Analysis, but I'm not entirely sure if that's always the case.
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