Exam PMI-SP topic 1 question 12 discussion

Actual exam question from PMI's PMI-SP

Question #: 12
Topic #: 1

You are the project manager of the NHA Project. This project is expected to last one year with quarterly milestones throughout the year. Your project is supposed to be at the third milestone today but you're likely only 60 percent complete. Your project has a BAC of $745,000 and you've spent $440,000 of the budget-to-date.
What is your schedule performance index for this project?

A. 80
B. 1.02
C. 102
D. 0.80

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Suggested Answer: D 🗳️
The schedule performance index can be found by dividing the earned value by the planned value. In this project, it's $447,000 divided by the $558,750 for a value of 0.80. Schedule performance index (SPI) is the measure of schedule efficiency on a project. It is used in trend analysis to predict future performance.
SPI is the ratio of earned value to planned value. The SPI is calculated based on the following formula:
SPI = Earned Value (EV) / Planned Value (PV)
If the SPI value is greater than 1, it indicates better than expected performance, whereas if the value is less than 1, it shows poor performance. The SPI value of 1 indicates that the project is right on target.
Incorrect Answers:
A: "80" is not the same value as ".80".
B: 1.02 is the cost performance index.
C: 102 is not a valid calculation for this question.

by Mopar at July 7, 2020, 11:41 p.m.

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lucksuman

3 years, 2 months ago

AC=440,000, PV=447,000 (i.e. 745000x0.6)

upvoted 1 times

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Mopar

4 years, 3 months ago

To better explain the math, you multiple $745,000 by .75 (since you are supposed to be 3rd milestone) to get $558,750. Then you take what you spent already; $440,000 and divide that by $558,750 to get .787472 = .80

upvoted 1 times

Miotti

1 year, 4 months ago

In this case you cannot use the actual cost because the question asks about schedule performance. So schedule performance index = EV (Earned Value) /PV (Planned Value) EV = 0,60 * 745,000 = 447,000 PV = 0,75* 745,000 = 558,750 SPI = 447,000/558,750 = 0,8

upvoted 2 times

ed55bcd

9 months ago

You are right on the explanation.......

upvoted 1 times

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Exam PMI-SP topic 1 question 12 discussion

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lucksuman

Mopar

Miotti

ed55bcd

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