cohd2delta: Cohen's d to Cliff's delta

In orddom: Ordinal Dominance Statistics

Description

Converts Cohen's d effect size to Cliff's delta as non-overlap between two standard normal distributions

Usage

cohd2delta(d)

Arguments

d	Cohen's d value

Details

Returns delta (or non-overlap, see Table 2.2.1 in Cohen, 1988, p.22).

Value

δ(d) = \frac{2AUC(\frac{d}{2})-1}{AUC(\frac{d}{2})}

, where AUC(x) = \frac{1}{√{2π}} \int_{-∞}^x e^{-t^2/2} \, dt

Author(s)

Jens Rogmann

References

Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Hillsdale, NJ, USA: Lawrence Erlbaum Associates.

See Also

delta2cohd

Examples

## Not run: > cohd2delta(1.1)
[1] 0.589245
> cohd2delta(2.1)
[1] 0.8278607
> cohd2delta(2.2)
[1] 0.8430398
> cohd2delta(4.0)
[1] 0.9767203
## End(Not run)

orddom documentation built on May 2, 2019, 2:45 a.m.