Software Project Management in Practice

11.4. DEFECT ANALYSIS AND PREVENTION

Defect prevention aims to learn from defects found so far on the project and to prevent defects in the rest of the project. As discussed in Chapter 5, defect prevention activities are usually done twice in a project: once when about 20% of the modules have been coded and unit tested, and again when 50% of the modules have been coded and unit tested. The main tasks of defect prevention are to perform Pareto analysis to identify the main defect types, perform causal analysis to identify the causes of defects, and identify solutions to attack the causes. Here we discuss how these tasks are performed in a project.

11.4.1. Performing Pareto Analysis

A common statistical technique used for analyzing causes, Pareto ...