| correl {samplesizeestimator} | R Documentation |
Sample Size for Testing Correlation Coefficient
Description
Calculates minimum sample size needed to detect at least rho0-rho1 units difference in the hypothesized and reported correlation coefficient for desired level of significance and power
Usage
correl(rho0, rho1, alp, pwr)
Arguments
rho0 |
magnitude of relationship between the two variables under study, set at null hypothesis |
rho1 |
anticipated magnitude of relationship between the two variables under study |
alp |
level of significance or accepted level of probability of type I error |
pwr |
desired level of power |
Value
a list object with minimum required sample size along with description for reporting
Author(s)
R. Amala, Scientist-C, ICMR-VCRC, Puducherry & G. Kumarapandiyan, Asst. Prof., Madras Christian College, Chennai
References
Bujang, M. A., & Baharum, N. (2016). Sample size guideline for correlation analysis. World Journal of Social Science, 3(1), 37-46.
Examples
correl(rho0 = 0.5, rho1 = 0.7, alp = 0.05, pwr = 0.8)