chi2power.hlp.htm

help chi2power
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Title

    chi2power -- Compute power for contingency tables.


Syntax

        chi2ower [, options]


    options                  description
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      startf(#)              Starting sample size factor
      endf(#)                Ending sample size factor
      incr([#)               Increment for sample size factor
      alpha(#)               Alpha level (default is 0.05)
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Description

    chi2power computes power for contingency tables using the observed likelihood-ratio chi-square as the noncentrality
    parameter for a noncentral chi-square distribution.

Examples

        . tabi 35 35  20 10, row lrchi2

        . chi2power

        . chi2power, startf(1) endf(5)

        . chi2power, startf(1) endf(5) incr(.5)

        . chi2power, startf(1) endf(5) incr(.5) alpha(.01)

Author

    Philip B. Ender
    UCLA Statistical Consulting Group
    ender@ucla.edu