| C |
CPI
CV
see cost variance.
CV%
cost performance index (CPI)
the cost efficiency ratio of earned value to actual cost. CPI is often used to predict the magnitude of a possible cost overrun by using the following formula: 
projected cost at completion. 
.
cost variance (CV)
the difference between the earned value of an activity and the actual cost of that activity; that is, 
.
cost variance percentage (CV%)
cost variance relative to earned value: 
.