Conclusion

Modeling the product quality and the process attributes provides a powerful means to estimate the effects of defect prevention activities. Simple models provide information useful in project management and in predicting the largest return on investment for process improvement. Additionally, simple models can provide valuable insight into development, but you must not forget the effect of the entire system.

Sequential models do not contain the richness necessary to evaluate system effects associated with process change. Defect prevention activities may appear ineffective unless the dynamic aspects of change are considered. Improving one practice often has unanticipated side effects. Therefore, a skilled modeler uses a combination of ...

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