English, Article edition: POWERCAL: Stata module to perform general power and sample size calculations Roger Newson

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Bookmark: http://trove.nla.gov.au/version/174821
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  • code
Language
  • English

Edition details

Title
  • POWERCAL: Stata module to perform general power and sample size calculations
Author
  • Roger Newson
Physical Description
  • code
Notes
  • powercal performs general power and sample size calculations, storing the result in a new variable. powercal can calculate any one of the number of sampling units, power, alpha (significance level), delta (difference in parameter value to be detected), or the standard deviation (SD) of the influence function. (The SD of the influence function is defined as the expected standard error of the sample difference multiplied by the number of sampling units.) Any of these 5 quantities can be calculated from the other 4. -powercal takes, as input, expressions delivering variables containing the 4 input quantities, and creates, as output, a variable containing the output quantity. These variables can then be plotted against each other, giving colleagues a view, at a glance, of the trade-offs involved.
  • power, sample size
  • RePEc:boc:bocode:s422401
Language
  • English
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