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Conversion from Correlation Difference to Cohen's q

conversion.cors.to.q.Rd

Helper function to convert correlation difference to Cohen's q (and vice versa). cor.to.z() function applies Fisher's z transformation.

Usage

cor.to.z(rho, verbose = TRUE)

  cors.to.q(rho1, rho2, verbose = TRUE)

  q.to.cors(q, rho1 = NULL, rho2 = NULL, verbose = TRUE)

Arguments

rho

correlation.

rho1

first correlation.

rho2

second correlation.

q

Cohen's q effect size.

verbose

logical; whether the output should be printed on the console. TRUE by default.

Value

rho1

first correlation.

rho2

second correlation.

delta

correlation difference: rho1 - rho2.

q

Cohen's q effect size.

Examples


q.to.cors(q = 0.10, rho1 = 0.50)
#>           q       delta        rho1        rho2 
#>  0.10000000 -0.07120268  0.50000000  0.57120268 
q.to.cors(q = 0.30, rho1 = 0.50)
#>          q      delta       rho1       rho2 
#>  0.3000000 -0.1907068  0.5000000  0.6907068 
q.to.cors(q = 0.50, rho1 = 0.50)
#>          q      delta       rho1       rho2 
#>  0.5000000 -0.2815365  0.5000000  0.7815365 

cors.to.q(rho2 = 0.5712027, rho1 = 0.50)
#>          q      delta       rho1       rho2 
#> -0.1000000 -0.0712027  0.5000000  0.5712027 
cors.to.q(rho2 = 0.6907068, rho1 = 0.50)
#>          q      delta       rho1       rho2 
#> -0.3000000 -0.1907068  0.5000000  0.6907068 
cors.to.q(rho2 = 0.7815365, rho1 = 0.50)
#>          q      delta       rho1       rho2 
#> -0.5000001 -0.2815365  0.5000000  0.7815365