PMP · Question #1143
In an agile project, the team planned to complete 40 story points in an iteration, but only completed 30 story points. What is the schedule performance index (SPI)?
The correct answer is A. 30/40. In an agile project, the team planned to complete 40 story points but only completed 30 in an iteration. The Schedule Performance Index (SPI) measures project schedule efficiency.
Question
In an agile project, the team planned to complete 40 story points in an iteration, but only completed 30 story points. What is the schedule performance index (SPI)?
Options
- A30/40
- B30/70
- C40/30
- D40/70
How the community answered
(49 responses)- A73% (36)
- B2% (1)
- C8% (4)
- D16% (8)
Why each option
In an agile project, the team planned to complete 40 story points but only completed 30 in an iteration. The Schedule Performance Index (SPI) measures project schedule efficiency.
The Schedule Performance Index (SPI) is calculated as Earned Value (EV) divided by Planned Value (PV). In this context, Earned Value is the completed story points (30), and Planned Value is the planned story points (40), resulting in an SPI of 30/40.
30/70 is not the correct formula for SPI; the denominator 70 has no standard relevance in this calculation.
40/30 represents Planned Value divided by Earned Value, which is the inverse of the correct SPI calculation and would incorrectly indicate performance.
40/70 is not the correct formula for SPI; the denominator 70 has no standard relevance in this calculation.
Concept tested: Agile Schedule Performance Index (SPI) calculation
Topics
Community Discussion
5
Viktor S.Apr 17, 2026A. SPI is earned value over planned value, so 30 completed divided by 40 planned gives you 0.75. The other options mix in nonsense denominators that have nothing to do with what was scheduled for the iteration.
Lena V.May 7, 2026A. SPI is earned value divided by planned value, so 30 divided by 40.
Anjali D.Apr 25, 2026Our group landed on A since SPI is earned value over planned value, so 30/40, though a few folks got tripped up by C because flipping the fraction seems plausible if you mix up the formula direction.
Zlatan X.Apr 21, 2026C is the right call here. SPI is about planned versus actual delivery, and the team planned 40 but delivered 30, so you invert the ratio to show the performance gap from the planning perspective. Putting 40 in the numerator frames it as how much was targeted relative to what got done, which gives you the schedule variance signal you need at the iteration review. I ran this past my study group and we all landed on C for the same reasoning.
Lena V.Apr 22, 2026A is correct. SPI is earned value divided by planned value, so 30 over 40 gives 0.75. The study group inverted the ratio, which is a common mistake, but the formula always puts actual earned in the numerator.