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Estimating Projects and More

Estimating the effort required to successfully build a system can be tricky. Function point (FP) analysis can be a good place to start, especially if you have a rough idea of how users will interact with the system. Although it’s another gem from the 80’s, my experience suggests that it’s still relevant today.

First step is to run your rough design through an FP calculator, like this one. You’ll then have a number that doesn’t mean too much. Apply a gearing factor to this, based upon the language you want to use. FPs x gearing factor = estimated number of lines of code.

Last step is to apply the number of lines of code to a COCOMO model to calculate estimated cost (effort and schedule) – easy peasy! You’ll be singing like the Beach Boys knowing that in IT, 80s cool is back!

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