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  1. powerForQual = function(SampSize, ThemePrevalence, NumInstances) {
  2.   pnbinom(SampSize-NumInstances, size = NumInstances, prob = ThemePrevalence)
  3. }
  4.  
  5. sampSizeForQual = function(Power, ThemePrevalence, NumInstances) {
  6.   qnbinom(Power, size = NumInstances, prob = ThemePrevalence) + NumInstances
  7. }
  8.  
  9. powerForQual(30, 0.1, 2)
  10.  
  11. sampSizeForQual(0.8, 0.1, 2)
  12.  
Success #stdin #stdout 0.29s 22840KB
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[1] 0.816305
[1] 29
https://ideone.com/oT4BRE
language:
R (R 3.5.2)
created:
11 years ago
visibility:
secret

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