Estimate and Size by Comparison is a tool for estimating software size, the single most significant driver of development cost, effort, and schedule. Estimate and Size by Comparison helps the user define software scope through a series of project analogies and/or comparisons to a user’s repository of past projects. In this way users can develop a reliable estimate on a project’s scope even when information is scarce. Sizing can be determined using analogies, pair-wise comparison, or through an array of metrics such as Function Points, Source Lines of Code (SLOC), Function Based Sizing, and Use Cases.
- Identify items to be estimated
- Select reference items which are the best match to the current project; reference items can be entered manually, selected by analogy, or obtained from a repository of past projects.
- Establish the relative size between reference items and the current project.
- Analyze and share reports and charts