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Benchmarking Software Development Productivity
K. Maxwell and P. Forselius 
IEEE Software 
January-February 2000
In this paper, the results of a statistical analysis of the productivity variation of a unique database which consists of 208 Business Software Projects from 26 companies in Finland are presented.  Productivity is measured in function points per hour.  

As analysis of the entire database showed that much of the productivity variation could be explained by the business sector of the customer company, differences in the factors explaining productivity in the banking, insurance, manufacturing, wholesale/retail and public administration sectors are examined in more detail.
Productivity equations that are useful both for estimating expected productivity at the start of a new project, as well as providing a benchmark for a completed project are given for each business sector.

Full paper available [download pdf file]

Also of interest:
Benchmark your Software Development Productivity Online
New Benchmarking Paper: Collecting for Comparability
Software Metrics Research

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Applied Statistics for Software Managers is the first complete guide to using statistical techniques to solve specific software development and maintenance problems. You don't need a mathematical background: Katrina Maxwell presents an easy-to-follow methodology and detailed case studies that show you exactly how to assess productivity, time to market, development effort and maintenance cost drivers. 
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