Schedule Performance Index (SPI) measures:
✓ Correct Answer: Option B
SPI = EV/PV. SPI > 1 = ahead of schedule, SPI < 1 = behind schedule, SPI = 1 = on schedule.
SPI = EV/PV. SPI > 1 = ahead of schedule, SPI < 1 = behind schedule, SPI = 1 = on schedule.