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IASSC ICBB Exam - Topic 4 Question 100 Discussion

Actual exam question for IASSC's ICBB exam
Question #: 100
Topic #: 4
[All ICBB Questions]

To properly analyze the variables impacting the output of a process we need to collect data that represents at least 80% of the variation in the process and assure ourselves we are collecting data from all three types of variation which are _______________.

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Suggested Answer: A

by Gladis at Jan 27, 2026, 09:16 PM

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Francine
9 hours ago
Totally agree, you can't ignore measurement variation!
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Alonso
6 days ago
The three types of variation are common, special, and measurement variation.
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Hillary
11 days ago
Haha, I thought it was common, special, and "the kitchen sink" variation!
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Noble
16 days ago
Common, special, and natural variation.
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Lyda
21 days ago
Common, special, and systemic variation.
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Lauran
26 days ago
Common, special, and inherent variation.
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Felix
1 month ago
Common, special, and random variation.
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Ellen
1 month ago
I feel like I’ve seen this before! It’s definitely common cause and special cause, but the third one might be variation due to measurement error?
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Glenn
1 month ago
I’m pretty sure it’s common cause and special cause, but I’m not confident about the third type. Was it systematic variation?
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Leanna
2 months ago
I remember practicing a question about variation types, and I think it was common cause, special cause, and... random variation?
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Vanda
2 months ago
I think the three types of variation are common cause, special cause, and... something else? I can't quite remember the last one.
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Marshall
3 months ago
I think I remember the three types, but I want to double-check before I start. Better safe than sorry on an exam question like this!
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Judy
3 months ago
No problem, I've got this. The three types are process, measurement, and environmental variation. I'll make sure to collect data that represents all of those to get a full picture.
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Leigha
3 months ago
Wait, what are the three types of variation again? I'm a bit fuzzy on that part. Maybe I'll just focus on collecting 80% of the overall process variation for now.
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Tandra
3 months ago
Okay, I've got this. The three types of variation are common cause, special cause, and measurement system variation. I'll need to make sure my data covers all of those.
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Joaquin
3 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the three types of variation to make sure I cover them all.
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