psychometric (version 2.2)

z2r: Fisher z' to r

Description

Converts a Fishers z' to Pearson correlation coefficient

Usage

z2r(x)

Arguments

x

z' (Fishers z prime)

Value

A Pearson Correlation coefficient

Details

r = (exp(2*z)-1)/exp(2*z)+1)

References

Cohen, J., Cohen, P., West, S. G., & Aiken, L. S. (2003). Applied multiple regression/correlation analysis for the behavioral sciences (3rd ed.). Mahwah, NJ: Lawrence Erlbaum.

See Also

r2z, CIr, CIz, SEz

Examples

# From ch. 2 in Cohen et al (2003)
zp <- r2z(.657)
zp
z2r(zp)