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Cem Kaner, a professor at the Florida Institute of Technology, has done research on the ratio of software testers to software developers. His presentation entitled “Managing the Proportion of Testers to Other Developers” is partially based on a meeting of the Software Test Managers Roundtable (STMR 3) in Fall 2001.

FIT

FIT

The study found that:
– There were very small ratios (1-to-7 and less) and very
large ratios (5-to-1).
– Some of each worked and some of each failed.
– Many remembered successful projects with ratios lower than 1-to-1 more favorably than successful projects with larger ratios.

Read the paper to find out why is there such a range of successful ratios, and why test managers be happy with relatively low ratios?

See: http://www.kaner.com/pdfs/pnsqc_ratios.pdf and http://www.kaner.com/

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