Thursday, February 24, 2011

What are the best tools for making time estimations for software development projects? - Quora

There are all sorts of formal methods, many of dubious value. In my experience this simple formula has proven most valuable:

(O + 4*L + P) / 6

Where:

O = Optimistic - "how long will this take if everything goes perfectly and there are no unexpected surprises?"

L = Most Likely - "how long do you think this will take in all likelihood?"

P = Pessimistic - "what's the longest it could take, assuming everything proves harder than expected and there are surprises you haven't anticipated?"

Often just asking those questions leads to better estimation. The exercise of thinking through all of the scenarios that could lead to the Pessimistic estimate, for example, often leads to a more realistic estimate in the other two categories.

Posted via email from Mocha Brain Freeze

1 comment:

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