Skip to contents

Fisher z-transformation

Source: R/z_fisher.R
z_fisher.Rd

The Fisher z-transformation converts the standard Pearson's r to a normally distributed variable z'. It is used to compute confidence intervals to correlations. The z' variable is different from the z-statistic.

Usage

z_fisher(r = NULL, z = NULL)

Arguments

r, z

The r or the z' value to be converted.

Value

The transformed value.

References

Zar, J.H., (2014). Spearman Rank Correlation: Overview. Wiley StatsRef: Statistics Reference Online. doi:10.1002/9781118445112.stat05964

Examples

z_fisher(r = 0.7)
#> [1] 0.8673005
z_fisher(z = 0.867)
#> [1] 0.6998467