Staffing level estimation in software engineering

This technique uses a mathematical approach as the weighted average of an optimistic, most likely and pessimistic estimate of the work package. This technique gives more accuracy in project estimation. For example, the cost for construction of a building is calculated based on the smallest variable as the cost to build a square feet area, the effort required to build a work packet is calculated from the variable as lines of codes in a software development project. This technique uses independent measurable variables from the project work. Expert judgment and historical information of similar activities in a referenced project are gathered to arrive at an estimate of the project. This project estimation technique is used when there is a reference to a similar project executed and it is easy to correlate with other projects.

This is usually used when the information is only known in smaller pieces. This technique is used when the requirements are known at a discrete level where the smaller workpieces are then aggregated to estimate the entire project. Once more detail is learned on the scope of the project, this technique is usually followed where high-level chunks at the feature or design level are estimated and are decomposed progressively into smaller chunks or work-packets as information is detailed. We will next learn about the top project estimation techniques. The initial estimate is drawn merely by assumptions knowing the scope at a high level, this is known as вЂ Ball-park estimatesвЂ™, a term very often used by project managers. Usually, during the early stages of a project life cycle, the project requirements are feebly known and less information is available to estimate the project. While accurate estimates are the basis of sound project planning, there are many techniques used as project management best practices in estimation as - Analogous estimation, Parametric estimation, Delphi method, 3 Point Estimate, Expert Judgment, Published Data Estimates, Vendor Bid Analysis, Reserve Analysis, Bottom-Up Analysis, and Simulation.

Staffing level estimation in software engineering