Chapter 16: Flow of Software Estimates on a Well-Estimated Project


Overview

Applicability of Techniques in This Chapter

 

Changing to More Accurate Estimation Techniques Later in the Project

Estimate Refinement Based on Project-Specific Data

What's estimated

Size, Effort, Schedule, Features

Size, Effort, Schedule, Features

Size of project

- M L

S M L

Development stage

Early-Late

Early-Late

Iterative or sequential

Sequential

Both

Accuracy possible

High

High

On poorly estimated projects, estimation focuses on directly estimating cost, effort, and schedule, with little or no focus on estimating the size of the software that will be built. Projects are reestimated many times, but usually in response to schedule slippages late in the project.

In a well-estimated project, the focus of estimation and the points at which the project is reestimated are different. This chapter describes the estimation flow of a well-estimated project. Chapter 17, "Standardized Estimation Procedures," describes how to create a standardized estimation approach that includes this healthy estimation flow.




Software Estimation. Demystifying the Black Art
Software Estimation: Demystifying the Black Art (Best Practices (Microsoft))
ISBN: 0735605351
EAN: 2147483647
Year: 2004
Pages: 212

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