ISEB-PM1 · Question #498
What is the schedule performance index (SPI) using the following data? BAC = $100,000 PV = $50,000 AC = $80,000 EV = $40,000
The correct answer is D. 0.80. SPI = EV ÷ PV = $40,000 ÷ $50,000 = 0.80, making D correct. An SPI below 1.0 means the project is behind schedule - only 80 cents of planned work was completed for every dollar of work planned. Why the distractors are wrong: A (1.00) would indicate perfect on-schedule…
Question
What is the schedule performance index (SPI) using the following data? BAC = $100,000 PV = $50,000 AC = $80,000 EV = $40,000
Options
- A1.00
- B0.40
- C0.50
- D0.80
How the community answered
(24 responses)- A4% (1)
- B8% (2)
- C4% (1)
- D83% (20)
Explanation
SPI = EV ÷ PV = $40,000 ÷ $50,000 = 0.80, making D correct. An SPI below 1.0 means the project is behind schedule - only 80 cents of planned work was completed for every dollar of work planned.
Why the distractors are wrong:
- A (1.00) would indicate perfect on-schedule performance (EV = PV), which isn't the case here.
- B (0.40) comes from dividing EV by BAC ($40K ÷ $100K), which gives percent complete - not SPI.
- C (0.50) comes from dividing PV by BAC ($50K ÷ $100K), which is the planned percent complete - again, not SPI.
Memory tip: Think "S-P-I = E over P" - "Did I Earn what I Planned?" The AC and BAC values in the question are deliberate distractors; SPI only uses EV and PV.
Topics
Community Discussion
No community discussion yet for this question.