References
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- Festinger , L. 1943 . An exact test of significance for means of samples from populations with an exponential frequency distribution . Psychometrika , 8 : 153 – 160 .
- Festinger , L. 1943 . A statistical test for means of samples from skew populations . Psychometrika , 8 : 205 – 210 .
- Irwin , J. O. 1927 . On the frequency distribution of the means of samples from a population having any law of frequency with finite moments, with special reference to Pearson's Type II . Biometrika , 19 : 225 – 239 .