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PMI Exam PMI-SP Topic 1 Question 93 Discussion

Actual exam question for PMI's PMI-SP exam
Question #: 93
Topic #: 1
[All PMI-SP Questions]

Harry is the project manager of a large network installation project. This project requires Harry to

add network cable to each office and cubicle of a 14-story office building. Harry will receive a bonus

for good time and cost performance in this project. What law of economics would prevent Harry

from exponentially adding labor to the project work in an effort to complete the work in a very small

amount of time?

Show Suggested Answer Hide Answer
Suggested Answer: B

The law of diminishing returns state that the user cannot exponentially add labor to a

project to reduce the amount of time required to complete the project work. In other words, Harry

cannot keep doubling the workforce on this project to reduce the project duration down to

just a few minutes.

The law of diminishing returns state that 'the user will get less and less output when he add

additional doses of an input while holding other

inputs fixed. In other words, the marginal product of each unit of input will decline as the amount of

that input increases holding all other

inputs constant.' Diminishing returns mean that the extra labor causes output to fall, which means

that the MPL is negative. In other words,

the change in output per unit increase in labor is negative and total output is falling.

Answer option C is incorrect. This is not a valid project management term.

Answer option A is incorrect. Parkinson's Law states that work will expand to the amount of time

allotted to it.

Answer option D is incorrect. Moore's Law is based on Intel's Gordon Moore who stated that

processor speeds generally double in power

every 18 months.


Contribute your Thoughts:

Hubert
1 months ago
Haha, I can just imagine Harry trying to bring in an army of workers, only to find they start getting in each other's way. The Law of Diminishing Returns is gonna slap him in the face real quick!
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Deandrea
1 months ago
I bet Harry is tempted to just 'brute force' this project, but the Law of Diminishing Returns will quickly catch up to him. Gotta work smart, not just hard!
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Elouise
10 days ago
Yeah, adding more labor may seem like a quick fix, but it could end up causing more problems in the long run.
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Karl
11 days ago
I agree, Harry needs to be strategic in his approach to avoid hitting that point of diminishing returns.
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Lonny
1 months ago
Parkinson's Law might also be a relevant factor, where the work tends to expand to fill the time available. But the Law of Diminishing Returns is the most direct answer.
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Barrie
1 days ago
D) Moore's Law
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Fernanda
7 days ago
C) Law of Economics
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Donte
12 days ago
B) Law of Diminishing Returns
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Leonida
19 days ago
A) Parkinson's Law
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Halina
2 months ago
The Law of Diminishing Returns is definitely the correct answer here. Harry can't just throw more labor at the problem and expect exponential gains.
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Keith
12 days ago
D) Moore's Law
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Paola
14 days ago
C) Law of Economics
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Ernest
15 days ago
B) Law of Diminishing Returns
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Lottie
1 months ago
A) Parkinson's Law
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Cheryl
2 months ago
I agree with Malinda, the Law of Diminishing Returns states that at some point, adding more input will not result in proportional output gains.
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Malinda
2 months ago
I think the answer is B because adding more labor may not necessarily speed up the project and could even lead to decreased efficiency.
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Mozell
2 months ago
B) Law of Diminishing Returns
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