Cost performance index, abbreviated as CPI, is a measure of the cost efficency of budgeted resources expressed as the ratio of earned value to actual cost.
Cost Performance Index Formula |
| \( CPI \;=\; \dfrac{ EV }{ AC } \) |
| Symbol |
| \( CPI \) = cost performance index |
| \( AC \) = actual cost |
| \( EV \) = earned value |
