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Practical Project Initiation: A Handbook with Tools by Karl E Wiegers

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Tracking Your Progress

Practice #18: Record Actuals and Estimates

Someone once asked me where to get historical data to improve her ability to estimate future work. My answer was, "If you write down what actually happened today, that becomes historical data tomorrow." Unless you record the actual effort or time spent on each task and compare them to your estimates, your estimates will forever remain guesses. Each individual can begin recording estimates and actuals, and the project manager should track these important measures on a project task or milestone basis. In addition to effort and schedule, you could estimate and track the size of the product, in units of requirements, lines of code, function points, classes and methods, GUI screens, or ...

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