PWPLOTI: Stata module to plot power curve for sample size and power calculation

Zhiqiang Wang ()
Additional contact information
Zhiqiang Wang: Menzies School of Health Research

Statistical Software Components from Boston College Department of Economics

Abstract: pwploti plots statistical power on the Y-axis and the required sample size of on the X-axis. Several lines can be plotted on the power curve, each one corresponding to a value of difference (defined in dlist) between two groups. It is an extension to sampsi. Most sampsi options are accepted. Note: pwploti only specifies the mean or proportion value in group 1, #1. The corresponding values in group 2 are derived from the #1 and differences between two groups, dlist. -keyplot- (q.v.) should be installed when more than four labels are needed.

Language: Stata
Requires: Stata version 6.0
Keywords: power curve; sample size (search for similar items in EconPapers)
Date: 1999-05-13
Note: This module may be installed from within Stata by typing "ssc install pwploti". Windows users should not attempt to download these files with a web browser.

Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/p/pwploti.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/p/pwploti.hlp help file (text/plain)

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