Chapter 15. Use of Multiple Approaches

No single estimation technique is perfect, so using multiple approaches is useful in many contexts. The most sophisticated commercial software producers tend to use at least three different estimating approaches and then look for convergence or spread among their estimates. Convergence among the estimates tells you that you probably have a good estimate. Spread tells you that there are probably factors you have overlooked and need to understand better. This technique applies equally ...

Get Software Estimation: Demystifying the Black Art now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.