Comments on: Estimating Project Deadlines http://particletree.com/notebook/estimating-project-deadlines/ Everyone needs a hug. Wed, 19 Nov 2008 11:47:57 +0000 http://wordpress.org/?v=2.6.3 By: Adrian Trenholm http://particletree.com/notebook/estimating-project-deadlines/#comment-269 Adrian Trenholm Thu, 07 Jul 2005 22:41:00 +0000 http://s2462.gridserver.com/wordpress/?p=57#comment-269 <p>You can also use an average of optimistic, pessimistic and probable:</p> <p>Te=(To + Tm + Tp)/3</p> <p>Giving:</p> <p>Te = (10 + 14 + 30)/3 Te = 18</p> <p>The Snead and Wycoff formula puts weight on the probable, whereas a straight average puts a bit more weight on the pessimistic (or at least it does if you are being properly pessimistic).</p> <p>If your probables are usually reasonably accurate, then use Snead and Wycoff; if you are consistently going over your estimated deadline, then switch to the average method.</p> You can also use an average of optimistic, pessimistic and probable:

Te=(To + Tm + Tp)/3

Giving:

Te = (10 + 14 + 30)/3 Te = 18

The Snead and Wycoff formula puts weight on the probable, whereas a straight average puts a bit more weight on the pessimistic (or at least it does if you are being properly pessimistic).

If your probables are usually reasonably accurate, then use Snead and Wycoff; if you are consistently going over your estimated deadline, then switch to the average method.

]]> By: Brian Benzinger http://particletree.com/notebook/estimating-project-deadlines/#comment-268 Brian Benzinger Tue, 28 Jun 2005 02:34:00 +0000 http://s2462.gridserver.com/wordpress/?p=57#comment-268 <p>That is genious. Perfect. I am going to try this on my next big project and see how it goes. Thanks bringing that article to my attention. And all this time I always guessed =p</p> That is genious. Perfect. I am going to try this on my next big project and see how it goes. Thanks bringing that article to my attention. And all this time I always guessed =p

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