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BCS TM12 Exam - Topic 8 Question 113 Discussion

Actual exam question for BCS's TM12 exam
Question #: 113
Topic #: 8
[All TM12 Questions]

Based on the historical data of 5 past and similar projects, you have calculated these average numbers of defects detected in system testing:

- for each 10000 LOC (lines of code), 200 defects

- for each person-month of development team effort, 49 defects

You want to use this information to perform estimation for a new project.

The project manager tells you that he/she has estimated 20000 new LOC for this new project.

Four developers work for four months on this project before system testing.

During system testing, 797 defects are discovered.

Assume that the system test of this new project is using the same amount of work as spent in the past projects.

Based on this information only, which of the following statement is certainly true about this project?

Number of correct responses: 1

Show Suggested Answer Hide Answer
Suggested Answer: B

by Rebbecca at Jul 06, 2025, 03:05 AM

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My
2 months ago
More LOC delivered? Sounds like a recipe for trouble!
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Willard
2 months ago
I agree, the number of defects found seems proportional to effort.
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Natalie
2 months ago
I think the defect density is definitely higher this time.
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Denise
3 months ago
Wait, 797 defects? That seems way off from the estimates!
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Anjelica
3 months ago
200 defects per 10k LOC is the average from past projects.
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Lili
3 months ago
I'm leaning towards option D because it mentions both more LOC and higher defect density, which seems plausible given the defect count, but I need to double-check the calculations.
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Shayne
3 months ago
I feel like we practiced a similar question where we had to estimate defects based on LOC and effort, but I can't recall the exact details.
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Ena
4 months ago
I think option B might be right since the defects found could relate to the effort put in, but I'm not entirely sure how to connect those two directly.
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Shakira
4 months ago
I remember we discussed defect density in class, and it seems like we can't definitively say the new project has a higher defect density just from the numbers given.
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Janella
4 months ago
I agree with Diego. The key is recognizing that the system testing effort was the same as the past projects, so the defect count should be proportional to the development effort.
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Diego
4 months ago
Based on the information provided, I think the answer is B. The number of defects found seems proportional to the development team effort, which matches the historical data.
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Casey
4 months ago
I'm a bit confused by the different metrics they're using - lines of code, person-months, and defects. I need to make sure I'm connecting all of those correctly.
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Remona
5 months ago
Okay, let's break this down step-by-step. We have the historical data, the project manager's estimates, and the actual results. I think we can use that information to determine the correct statement.
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Christiane
5 months ago
This question seems straightforward, but I want to make sure I understand the details before answering.
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Skye
7 months ago
I think C is the most logical choice.
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Julieta
7 months ago
I'm leaning towards B as the correct answer.
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Ernie
7 months ago
I disagree, I believe the answer is A.
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Edgar
7 months ago
I think the answer is D.
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Cortney
7 months ago
Option A is the correct answer. The higher number of defects found indicates a higher defect density in the new project's code compared to the past projects.
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Naomi
5 months ago
C) 40000 LOC have been delivered to system testing (against the 20000 LOC planned by the project manager)
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Chun
6 months ago
B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort
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Jesusa
6 months ago
C) 40000 LOC have been delivered to system testing (against the 20000 LOC planned by the project manager)
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Marti
6 months ago
A) The code for the new project contains a higher defect density than the code of the past projects
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Cammy
6 months ago
B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort
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Nobuko
6 months ago
A) The code for the new project contains a higher defect density than the code of the past projects
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Dell
7 months ago
Haha, I bet the project manager is regretting that 20,000 LOC estimate now. Option C is the way to go.
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Annice
6 months ago
B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort
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Lindsey
6 months ago
A) The code for the new project contains a higher defect density than the code of the past projects
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Zona
7 months ago
I'm going with D. The project delivered more LOC than planned, and the defect density is higher than in the past projects. Looks like they underestimated the scope.
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Angelyn
7 months ago
Yeah, it does look like they underestimated the scope of the project.
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Ligia
7 months ago
I think you're right, D seems to be the most accurate option here.
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Vincenza
8 months ago
Option B seems logical to me. The number of defects found is proportional to the development team effort, as the system test effort was the same as in the past projects.
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Isaiah
7 months ago
Definitely, it shows the importance of the development team's effort in finding defects during testing.
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Silva
7 months ago
I agree, it makes sense that the number of defects found would be related to the team effort.
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Chaya
8 months ago
B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort
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