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PITMAN: a FORTRAN program for exact randomization tests.

G E Dallal1

  • 1USDA-Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts 02111.

Computers and Biomedical Research, an International Journal
|February 1, 1988
PubMed
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PITMAN software conducts exact randomization tests and Wilcoxon rank-based tests, even with tied data. Its source code is available for customization and porting to different systems.

Area of Science:

  • Statistical software development
  • Nonparametric statistical methods

Background:

  • Accurate statistical testing is crucial for data analysis.
  • Existing methods may have limitations with tied data.
  • Software implementation facilitates broader application of statistical tests.

Purpose of the Study:

  • To introduce PITMAN, a software package for statistical analysis.
  • To enable exact randomization and Wilcoxon tests with tied data.
  • To provide accessible and customizable statistical software.

Main Methods:

  • Implementation of exact randomization tests.
  • Inclusion of Wilcoxon signed-rank and Mann-Whitney U tests.
  • Capability to handle arbitrary numbers of ties in datasets.

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Main Results:

  • PITMAN successfully performs specified nonparametric tests.
  • The software accommodates datasets with tied values.
  • It operates on IBM PC systems with 256K memory.

Conclusions:

  • PITMAN offers a robust solution for specific statistical tests, including those with ties.
  • The availability of source code enhances its utility and adaptability.
  • This software provides a valuable tool for researchers requiring precise nonparametric analyses.