size.interval.cor {statpsych} | R Documentation |
Computes the sample size required to perform a finite interval test for a Pearson or a partial correlation with desired power. Set s = 0 for a Pearson correlation. The correlation planning value must be a value within the hypothesized finite interval.
size.interval.cor(alpha, pow, cor, s, h)
alpha |
alpha level for hypothesis test |
pow |
desired power |
cor |
planning value of correlation |
s |
number of control variables |
h |
upper limit of hypothesized interval |
Returns the required sample size
size.interval.cor(.05, .8, .1, 0, .25) # Should return: # Sample size # [1,] 360