Cost Performance Index
Cost Performance Index (CPI)is a measure of the cost efficiency of budgeted resources expressed as the ratio of earned value to actual cost. See also schedule performance index (SPI).
Definition
According to the PMI Lexicon of Project Management Terms,
- Cost Performance Index (CPI). A measure of the cost efficiency of budgeted resources expressed as the ratio of earned value to actual cost. See also schedule performance index (SPI).