PASS

Power Analysis &
Sample Size Software

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NCSS

Statistical Analysis
& Graphics Software

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NCSS

  • Easy-to-use statistical and graphics tools
  • Fine-tuned and improved
    for over 25 years
  • Accurate, comprehensive, and intuitive statistical software
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PASS

  • Most comprehensive set of power analysis and sample size tools on the market
  • Over 150 fully-validated procedures
  • Complete help system documentation with examples, annotated output, references, and formulas
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