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Step 8 — Sensitivity Analysis
Sensitivity analysis
The sensitivity analyses are often the reason people run software reliability predictions in the first place. Below are the analyses you can run, and the steps to complete before each.
Available Analyses
Choose an analysis
Analysis
Steps to complete first
Description
Staffing
Steps 1 through 4
Predicts how many people will be needed to correct defects reported from the field.
Test staffing
Steps 1 through 4
Predicts how many people will be needed to correct defects found in testing.
Sensitivity summary
Step 2
Identifies gaps and strengths based on the full-scale assessment.
Foundation practices
In parallel with Step 2
Identifies which practices nearly all organizations already have in place.
Mediocre practices
In parallel with Step 2
Identifies practices popular in industry that aren’t actually correlated with reduced defect density.
Defect pileup
Steps 1 through 4
Identifies how many defects will pile up based on the spacing between new-feature releases — can identify optimal release spacing. Currently under construction.
Start with the improvement analysis.
See exactly how much specific development-practice changes would reduce your predicted defect density.