CS605 Assignment 4 Solution

Software Engineering II CS605

Assignment 4 Solution

Question:

Suppose you are a project manager of a company xyz. You have been asked to compute the earned value analysis of a software project. The software project has 70 planned work tasks that are estimated to require 620 person-days to complete. At the time you have been asked to do the earned value analysis, 13 tasks have been completed. However, the project schedule indicates that 16 tasks should have been completed. The following scheduling data in person-days are available:

You are required to compute the SPI, schedule variance, percent scheduled for completion, percent complete, CPI, and cost variance for the project.

Solution:

Budgeted cost of work scheduled (BCWS)

11 + 8 + 5 + 13 + 11 + 15 + 8 + 7 + 10 + 12.5 + 6 + 3 + 10 + 5 + 6 = 130.5

Budgeted cost of work performed (BCWP):

11 + 8 + 5 + 13 + 11 + 15 + 8 + 7 + 10 + 12.5 + 6 + 3 = 109.5

Budgetat Completion

620

Schedule performance index, SPI = BCWP/BCWS = 109.5/130.5 = 0.83

Schedule variance, SV = BCWP – BCWS = 109.5 - 130.5 = -21

Percent scheduled for completion = BCWS/BAC = 130.5/620 = 0.21

Percent complete = BCWP/BAC = 109.5/620 = 0.17

Actual Cost of Work Performed

10 + 9 + 4 + 13.5 + 11 + 16 + 10 + 7 + 9 + 13 + 5 + 5 = 112.5

Cost performance index, CPI = BCWP/ACWP = 109.5/112.5 = 0.97

Cost variance, CV = BCWP – ACWP = 109.5 – 112.5 = -3

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