Example of Schedule Performance Index (SPI)
Given a project to be completed in 12 months and the budget of the project is 1, 00, 000 INR.
- Six months have passed and 60, 000 INR has been spent but on closer review it is found that only 40% of the work has been completed till now.
- Find the Schedule Performance Index and conclude whether the project is behind or ahead of schedule.
Solution:
Actual Cost (AC) = 60, 000 INR
Planned Value (PV) = 50% of 1, 00, 000 INR
= 50, 000 INREarned Value (EV) = 40% of 1, 00, 000 INR
= 40, 000 INRSPI = Earned Value / Planned Value
= 40, 000 / 50, 000
= 0.8Hence, the Schedule Performance Index is 0.8.
Conclusion is that the project is behind schedule since the Schedule Performance Index is less than one.
Schedule Performance Index (SPI) – Software Engineering
Schedule Performance Index (SPI) describes how efficiently we are progressing compared to the planned project schedule. The Schedule Performance Index (SPI) can be defined as a measure of schedule efficiency expressed as the ratio of earned value to planned value. The Schedule Performance Index gives information about the schedule performance of the project. It is the efficiency of the time utilized on the project.
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