cost performance index
A measure of cost efficiency of a project.
The cost performance index (CPI) is determined by measuring the ratio of earned value (EV) to actual costs (AC):
CPI = EV / AC
If the result is less than 1.0, cost is greater than budgeted.
If the result is greater than 1.0, cost is less than budgeted.
example:
| EV | PV | AC | CPI | SPI |
|---|---|---|---|---|
| 270 | 335 | 250 | 1.08 | 0.81 |