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Cost of Software Quality. Based on Industry Experience - Quality as a Percent of Development Costs Price-Waterhouse 1993 Software Quality: 40 - 55% Knox 1993 SEI Level One: 60% Haley 1996 SEI Level One: 55 - 67% SEI Level Three: 40%.
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Cost of Software Quality • Based on Industry Experience - • Quality as a Percent of Development Costs • Price-Waterhouse 1993 • Software Quality: 40 - 55% • Knox 1993 • SEI Level One: 60% • Haley 1996 • SEI Level One: 55 - 67% • SEI Level Three: 40% Cost of Quality: Software Quality Professional, March 1999
Actual Cost of Software Quality Total Software Development Project Cost Established Cost of Software Quality in projects “Good” Project “Not So Good” Project From 40 - 67 % of costs are for Software Quality!
Testing Payoffs Where do system problems come from? How do you test to see if these problems exist? How significant is the testing effort in each to overall system success? Source of Defects - Bender & Associates
Test Life Cycle Model Testing happens throughout the software life cycle. Adopt a Testing Life Cycle mentality. Validates Acceptance Test Business Need Verify Validate Validates System Test Define Requirements Verify Validate Validates Design System Integration Test Static Testing Dynamic Testing Validate Verify Validates Build System Unit Test Verify Validate