Tuesday 7 June 2011

Earned Value Analysis (EVA)

The brief description of Earned Value Analysis (EVA) is shown below:-

(1) One approach to measuring progress in a software project is to calculate how much has been accomplished. This called Earned Value Analysis.

(2) It is basically the percentage of the estimated time that has been completed.

(3) This based on estimated effort, it could be based on any quantity that can be estimated and is related to progress.

(4) Basic Measured Used:                                                                    

Budgeted Cost of Work (BCW)The estimated effort for each work task .


Budgeted Cost of Work Scheduled (BCWS)The sum of the estimated effort for each work task that was scheduled to be completed by the specified time .

Budget at Completion (BAC) The total of the BCWS and thus the estimate of the total effort for the project.


Planned Valve (PV)The percentage of the total estimated effort that is assigned to a particular work task (PV=BCW/BAC).

Budgeted Cost of Work Performed (BCWP)The sum of the estimated efforts for the work tasks that have been completed by the specified time .


Actual Cost of Work Performed (ACWP)The sum of the actual efforts for the work tasks that have been completed.

(5) Progress Indicator for EVA:
                  Earned Value (EV) = BCWP/BAC
                 Schedule Performance Index (SPI) = BCWP/BCWS
                Schedule Variance (SV) = BCWP – BCWS
              Cost Performance Index (CPI) = BCWP/ACWP
             Cost Variance (CV) = BCWP – ACWP

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