Jenny works as a Project Manager for Blue Well Inc. She is measuring the schedule efficiency of
her project. The key values are provided in the table below:
MeasurementsValues
BCWP (or EV) 425
BCWS (or PV) 400
ACWP (or AC) 510
What is the schedule performance index (SPI) of the project at the current point of time?

A.
1.082

B.
0.88

C.
1.0625

D.
0.96

Explanation:
According to the question, you are required to calculate the schedule performance index (SPI) of
the project. 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. Here, SPI is calculated as follows: SPI = EV / PV =
425/400 = 1.0625 As the SPI (1.0625) is greater than 1, it shows that the schedule performance is
better than expected. What is BCWP (or EV)? Budgeted cost of work performed (BCWP) or
Earned Value (EV) is the value of completed work. It is the budgeted amount for the work actually
completed on the schedule activity during a given time period. What is BCWS (or PV)? Budgeted
Cost of Work Scheduled (BCWS) or Planned Value (PV) is the authorized budget assigned to the
scheduled work to be accomplished for a schedule activity or Work Breakdown Structure (WBS)
component. What is ACWP (or AC)? Actual cost of work performed (ACWP) or Actual Cost (AC) is
the total costs actually incurred and recorded in accomplishing work performed during a given time
period for a schedule activity. It is the cost of the work to date, including direct and indirect costs.
AC is money that has actually been expended to date.