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IASSC ICBB Exam - Topic 1 Question 99 Discussion

Special Cause Variation falls into which two categories? (Note: There are 2 correct answers).
C) Assignable and D) Pattern
A) Natural
B) Short term

IASSC ICBB Exam - Topic 1 Question 99 Discussion

Actual exam question for IASSC's ICBB exam
Question #: 99
Topic #: 1
[All ICBB Questions]

Special Cause Variation falls into which two categories? (Note: There are 2 correct answers).

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Suggested Answer: C, D

by Glory at Jan 05, 2026, 05:16 AM

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Glenn
1 month ago
Definitely C and A! Special causes are usually assignable.
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Emmanuel
2 months ago
I was leaning towards B and D. But now I'm not sure.
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Emerson
2 months ago
I agree, C and A make sense. Short term doesn't fit.
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Caitlin
2 months ago
I think it's C and A. Natural and Assignable.
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Ena
2 months ago
Yup, C and A are the ones!
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Zona
2 months ago
B) Short term isn't a category for Special Cause, right?
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Carmen
2 months ago
Wait, are we sure about A? Seems off.
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Dorethea
3 months ago
Totally agree with that!
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Jaleesa
3 months ago
It's C) Assignable and A) Natural!
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Arthur
3 months ago
Hmm, I think I need to review my notes on statistical process control again. This one's got me stumped.
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Stefania
4 months ago
Haha, I bet the exam writer was just trying to trick us with those answer choices. C and D for sure!
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Izetta
4 months ago
Natural and assignable variations, obviously. What kind of question is this?
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Weldon
4 months ago
I'm pretty sure it's B and C. Short-term and assignable variations are the two categories.
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Karina
4 months ago
C and D are the correct answers.
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Carlota
4 months ago
I’m confused. I thought Pattern was a category too, but now I’m not so sure if it fits with Special Cause Variation.
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Justine
4 months ago
I feel like we had a practice question on this. Wasn't it something like Short term and Assignable?
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Clare
5 months ago
I remember studying this! I think Natural might be one of the categories, but I can't recall the other one clearly.
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Alica
5 months ago
I think Special Cause Variation is related to Assignable causes, but I'm not sure about the second one.
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Yasuko
5 months ago
I've got this! Special cause variation is the variation that's caused by specific, identifiable factors. The two correct answers are definitely C) Assignable and D) Pattern. I'm feeling confident about this one.
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Letha
5 months ago
Okay, let me see. Special cause variation is the variation that's not part of the normal process, right? So I'm guessing the two correct answers are B) Short term and C) Assignable. I'll double-check my notes to be sure.
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Maybelle
5 months ago
Hmm, I'm a bit confused on this one. I know special cause variation is different from common cause variation, but I'm not sure how to categorize it. I'll have to think this through carefully.
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Tammi
6 months ago
I'm pretty sure this has to do with the different types of variation in a process. I think the two correct answers are C) Assignable and D) Pattern.
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Lynelle
1 month ago
I think D) Pattern is also a good choice.
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Artie
1 month ago
I agree with you! C) Assignable makes sense.
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