
efforts of the tasks that have been completed by the status date and the esti-
mated efforts of the tasks that were scheduled or planned to have been
completed by the status date:
SV = BCWP ⫺ BCWS
In our example, on 4/5/06, BCWP is 50 Pers-days, and BCWS is 25 Pers-
days. Thus SV = 50 ⫺ 25, or 25 Pers-days. We may interpret the project sta-
tus as 25 Pers-days ahead of schedule from an effort perspective.
The second variance indicator is the cost variance (CV), which is defined as
the difference between the estimated efforts of the tasks that have been
completed at the status date and the actual efforts expended for the tasks
that have been completed ...