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Estimating Software Costs by Capers Jones

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Chapter 3Six Forms of Software Cost Estimation

Among our clients about 80 percent of large corporations utilize automated software-estimation tools. About 30 percent utilize two or more automated estimation tools, sometimes for the same project. About 15 percent employ cost-estimating specialists. In large companies, manual estimates are used primarily for small projects below 500 function points in size or for “quick and dirty” estimates where high precision is not required.

However, for small companies with less than 100 software personnel, only about 25 percent utilize automated software-estimation tools. The primary reason for this is that small companies only build small software projects, where high-precision estimates are not as important ...

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