size.test.cor: Sample size for a test of a Pearson or partial correlation

In statpsych: Statistical Methods for Psychologists

Sample size for a test of a Pearson or partial correlation

Description

Computes the sample size required to test a population Pearson or a partial correlation with desired power. Set s = 0 for a Pearson correlation.

For more details, see Section 1.25 of Bonett (2021, Volume 2)

Usage

size.test.cor(alpha, pow, cor, s, h)

Arguments

alpha	alpha level for hypothesis test
pow	desired power
cor	planning value of correlation
s	number of control variables
h	null hypothesis value of correlation

Value

Returns the required sample size

References

\insertRef

Bonett2021statpsych

Examples

size.test.cor(.05, .95, -.50, 0, 0)

# Should return:
# Sample size
#          47

size.test.cor(.05, .90, .4, 2, 0)

# Should return:
# Sample size
#          64
 

statpsych documentation built on Jan. 13, 2026, 1:07 a.m.