Difference between Analogous and Parametric Estimating

Submitted by RP on Sat, 08/20/2011 - 10:33
RP's picture

Hi - Can anyone offer me a distinct difference between Analogous and Parametric Estimating? I am using Rita's PMP Exam Prep 6th Ed but this does not seem to give me a clear difference/definition between them both.


Both use historical data as input to assume activity/project times. The only real difference I can pick up is that Parametric may be more detailed.


Thanks in advance.

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admin

Sat, 08/20/2011 - 11:37

Check this post http://pmzilla.com/clarification-required

RP's picture

RP

Sat, 08/20/2011 - 12:46

Perfect, Thanks! So in essence, Parametric involves more detailed estimating extrapolations than analogous.

ksingh.rajeev

Sat, 08/20/2011 - 21:58

In my view...

If you are using mathematical operations in your calculation then it will be parametric otherwise it will Analogous.

dsay22

Mon, 07/04/2016 - 18:04

Very helpful.  Thanks!

surfinjosh

Sun, 08/21/2011 - 00:58

at leaset 6 questions on the PMP covered this very area of estimating.  You better understand it!!!

pmalik

Thu, 07/07/2016 - 12:38

Hi,

You can read this article http://www.pmbypm.com/analogous-parametric-estimation/ to understand the difference with examples.

BR.