Description Usage Arguments Value Author(s) References Examples

Give the conventional effect size (small, medium, large) for the tests available in this package

1 2 |

`test` |
The statistical test of interest |

`size` |
The ES : small, medium of large? |

The corresponding effect size

Stephane CHAMPELY

Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale,NJ: Lawrence Erlbaum.

1 2 3 4 5 6 7 | ```
## medium effect size for the correlation test
cohen.ES(test="r", size="medium")
## sample size for a medium size effect in the two-sided correlation test
## using the conventional power of 0.80
pwr.r.test(r=cohen.ES(test="r",size="medium")$effect.size,
power=0.80, sig.level=0.05, alternative="two.sided")
``` |

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