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BACB BCABA Exam - Topic 2 Question 120 Discussion

Tony is supervising a work crew at the post office. Every day, his clients are supposed to check each waste bin and empty those that contain trash. Tony takes data on the number of waste bins emptied by the crew. In order to report data in terms of percentage of occurrence Tony MUST also know:
B) how many waste bins contained trash.
A) that some waste bins contained trash.
C) how many waste bins were in the office.
D) This behavior is not amenable to percent of occurrence reporting.

BACB BCABA Exam - Topic 2 Question 120 Discussion

Actual exam question for BACB's BCABA exam
Question #: 120
Topic #: 2
[All BCABA Questions]

Tony is supervising a work crew at the post office. Every day, his clients are supposed to check each waste bin and empty those that contain trash. Tony takes data on the number of waste bins emptied by the crew. In order to report data in terms of percentage of occurrence Tony MUST also know:

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Suggested Answer: B

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

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Shala
2 months ago
D doesn't apply here; we need data for reporting.
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Giovanna
2 months ago
C makes sense, but without B, it's incomplete.
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Hobert
2 months ago
A is important too, but B is key for percentages.
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Katie
3 months ago
I think it's B. Need to know how many had trash.
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Portia
3 months ago
Not sure about D, seems like it could work somehow.
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Sheridan
3 months ago
Totally agree, C is essential for percentages!
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Haydee
3 months ago
Wait, does he really need to know if bins had trash?
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Peter
3 months ago
Definitely B, can't report without that info!
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Iluminada
3 months ago
He needs to know how many bins were there.
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Annita
4 months ago
Wait, so Tony can't even report the percentage of bins that were empty? That seems like a pretty basic metric.
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Dierdre
4 months ago
Haha, I bet Tony wishes he had a magical trash-sensing superpower to know which bins were full without actually checking them!
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Jacquelyne
4 months ago
D) What? Reporting the percentage of occurrence is not possible with this data? That's just silly.
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Terrilyn
5 months ago
A) and B) are both necessary to determine the percentage of waste bins that contained trash.
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Terrilyn
5 months ago
C) Knowing the total number of waste bins is crucial for the percentage calculation.
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Janessa
5 months ago
B) Definitely, you need to know how many waste bins contained trash to calculate the percentage.
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Jonell
5 months ago
I lean towards A, but I’m not confident. It seems like knowing if there’s trash at all is necessary, but I wonder if it’s enough on its own.
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Yong
5 months ago
I remember a practice question where we had to determine what data was needed for percentage calculations. I think it was similar to this, but I can't recall the exact details.
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Rikki
6 months ago
I'm not entirely sure, but I feel like B could be important too, because if we don't know how many had trash, we can't really report accurately.
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Noel
6 months ago
I think the answer might be C, since knowing the total number of waste bins is crucial for calculating percentages.
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Thea
6 months ago
This looks straightforward enough. I'd start by identifying the key information we need, which is the total number of waste bins and the number that contained trash. Then I'd use that to calculate the percentage, following the instructions in the question.
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Allene
6 months ago
I'm a little confused by the wording of this question. It seems like option D might be the correct answer, but I'm not totally sure. I'd probably try to break down the question and think through each of the answer choices carefully.
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Odelia
6 months ago
Okay, so we need to know the total number of waste bins and how many had trash in order to calculate the percentage. That makes sense. I think I'd start by trying to find those numbers, and then use them to solve for the percentage.
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Dion
6 months ago
Hmm, this seems a bit tricky. I'm not sure if I fully understand what "percent of occurrence" means in this context. I'd probably try to clarify that with the instructor before attempting to solve the problem.
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Yuonne
7 months ago
I think I'd start by looking at the information given in the question. It seems like we need to know the total number of waste bins and how many of them contained trash in order to calculate the percentage. I'd focus on finding those two key pieces of data.
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Karol
5 days ago
Without that data, we can't calculate the percentage.
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Shenika
10 days ago
And we must know how many had trash in them!
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Carri
16 days ago
We definitely need the total number of bins.
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