Chapter 20: Special Issues in Estimating Schedule


Overview

Open table as spreadsheet

Applicability of Techniques in This Chapter

 

The Basic Schedule Equation

Informal Comparison to Past Projects

Jones's First-Order Estimation Practice

Estimation Software Tools

What's Estimated

Schedule

Schedule

Schedule

Schedule

Size of project

- M L

S M L

- M L

- M L

Development stage

Early

Early

Early

Early

Iterative or sequential

Sequential

Both

Sequential

Both

Accuracy possible

Medium

Medium

Low

High

The need to meet customer deadlines, trade show deadlines, seasonal sales-cycle deadlines, regulatory deadlines, and other calendar-oriented deadlines seems to put much of the estimation pressure on the schedule. The schedule estimate seems to produce most of the heat in estimation discussions.

Ironically, once you move from intuitive estimation approaches to approaches based on historical data, the schedule estimate becomes a simple computation that flows from the size and effort estimates. If T.S. Eliot had written poems about software, he might have written

This is the way the estimate ends

This is the way the estimate ends

This is the way the estimate ends

Not with a bang but a whimper




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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