cost performance ratio ("cpr")
The ratio of budgeted costs to actual costs (BCWP/ ACWP). CPI is often used to predict the magnitude of a possible cost overrun by dividing it into the original cost estimate (original cost estimate/ CPI = projected cost at completion). In older Earned Va
Ratio of work accomplished versus work cost incurred for a specified time period. The CPI is an efficiency rating for work accomplished for resources expended.
See also: Cost Performance Index.