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The Business Value of Agile Software Methods by Saya Sone, Hasan Sayani, David Rico

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Appendix

The appendix contains the formulas, values, and results used to measure the economic business value of agile methods. There are formulas for pair programming, test-driven development, Extreme Programming, Scrum, and agile methods. Generally speaking, each of the formulas is based on two basic inputs: (1) costs and (2) benefits. Therefore, the first formula estimates the costs of each major kind of agile method, whereas the second formula estimates the benefits.

The first formula is the cost model, which uses size, productivity, and quality as its basic inputs. An input of 10,000 lines of code (LOC) was used as a basis for a size estimate throughout this textbook and appendix. Then, an average productivity and quality value was used ...

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