Page 37 - DMGT521_PROJECT_MANAGEMENT

Project Management

Notes
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Case Study HCL: When to do re-estimation?

A software company receives a web based development project from renowned
client to develop vehicle tracking system for their organization.

The software company is well set to start the project and preparing the ground work. They
have done the sizing exercise based on the requirements shared by the client using Function
Point methodology and arrived the size of 200 FP. It is JAVA based technology and by
using their organization productivity of 0.8 FP/day (of high skilled resource), the efforts
required to complete the development of the project is 250 Person days.
Project manager started the project unfortunately he didn't get skilled resources. When
the PM generates EV metrics for 1st week of the project, realized that the project is not
going on track and there is 5% variance due to requirements delay from client.
At the end of the 2 weeks PM found that variance is increased to 40%. The reasons added
here are resources are not skilled enough to understand the requirements and prepare
design documents.
No of days estimated to complete the project = 250 Person Days
No of Months to complete the project allocating 4 resources= 250/(20*4) = 3.125 PMs

After 2 weeks, when the project manager generates the following metrics:

The project is over budget and behind the schedule (please refer to appendix - A for details
on metrics)
PM able to calculate above metrics as he baselined the estimates and plan, compared
actuals against baselined efforts.
The remaining size of the application to be developed = 184 FP
To complete 184 FP in 210 person days require = 184/210 = 1.14 against the 0.8 productivity
assumed for initial estimation.
Once the re-estimation done and baseline the Estimation, re-planning should follow and
plan need to be baselined.

Re-estimation at end of the project Phase
An MNC awarded to develop employee leave details Portal
Initially project is sized to 100 FP. It is JAVA based technology and by using their
organization productivity of 0.8 FP/day, the efforts required to complete the development
of the project is 125 Person days.
At the end of the Requirements phase the size of the project is increased by 50 FP due to
scope creep.

Contd...

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