Description Usage Arguments Details Value Author(s) References See Also Examples

Compute effect size h for two proportions

1 | ```
ES.h(p1, p2)
``` |

`p1` |
First proportion |

`p2` |
Second proportion |

The effect size is 2*asin(sqrt(p1))-2*asin(sqrt(p2))

The corresponding effect size

Stephane CHAMPELY

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

pwr.p.test, pwr.2p.test, pwr.2p2n.test, power.prop.test

1 2 3 4 | ```
## Exercise 6.5 p. 203 from Cohen
h<-ES.h(0.5,0.4)
h
pwr.p.test(h=h,n=60,sig.level=0.05,alternative="two.sided")
``` |

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