This sounds scary. Does anybody at the world bank realize that the estimates they are bidding on are guesses from a guy who lives with roommates? I thought you needed to be an old battle hardened fellow to pull numbers out of your a** like that and have people take you seriously.
Thankfully, there's a layer of indirection here: our estimates are largely for internal use. We haven't been talking directly to the client on this one.
That said I'm pretty happy with our estimation method when we actually get around to doing it. It's a pretty standard decomposition method, where every big feature item gets broken down into as little bitty tasks as we can stand (less variance on each estimate). And then we normally have two or three people making separate estimates for each task, and then average them (getting a more reliable statistic).
It's labor intensive, but I'm enough of a statistics nerd to feel like all the extra labor is justified.
Oh, then we round up and pad the result like hell.
I never thought I'd be going back for a THIRD year, but then my brother is graduating from Wesleyan this weekend just a short drive away, so I'll be breaking it down (or something like that, I'm getting old, you know) for Friday night. One night only. Hopefully see you then...
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Thankfully, there's a layer of indirection here: our estimates are largely for internal use. We haven't been talking directly to the client on this one.
That said I'm pretty happy with our estimation method when we actually get around to doing it. It's a pretty standard decomposition method, where every big feature item gets broken down into as little bitty tasks as we can stand (less variance on each estimate). And then we normally have two or three people making separate estimates for each task, and then average them (getting a more reliable statistic).
It's labor intensive, but I'm enough of a statistics nerd to feel like all the extra labor is justified.
Oh, then we round up and pad the result like hell.
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