Category: estimating
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Remotivating data analysed for another purpose
The motivation for fitting a regression model has a major impact on the model created. Some of the motivations include: practicing software developers/managers wanting to use information from previous work to help solve a current problem, researchers wanting to get their work published seeks to build a regression model that show they have discovered something […]
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Putnam’s software equation debunked
The implementation of a project has a lifecycle that starts and finishes with zero people working on it. Between starting and finishing, the number of staff quickly grows to a peak before slowly declining. In a series of very hard to obtain papers during the early 1960s (chapter 5), Peter Norden created a large project […]
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Modelling estimate/actual including uncertainty in the estimate
What is an effective technique for modelling the relationship between the time estimated to implement a task and the actual time taken to implement that task? A regression model is the obvious approach. However, an important assumption made by the commonly used regression techniques is not met by estimate/actual project data The commonly used regression […]