library(DGB)
Computes a confidence interval for a Pearson correlation.
Arguments: - alpha: alpha level for 1-alpha confidence - corr: sample value of correlation - n: sample size
Values: - lower limit, upper limit
alpha = .05 corr = .802 n = 200 ci.corr.os(alpha, corr, n)
Computes sample size required to estimate a correlation with desired precision.
Arguments: - alpha: alpha level for 1-alpha confidence - corr: planning value of correlation - w: desired confidence interval width
Values: - required sample size
alpha = .05 corr = .52 w = .2 size.ci.corr.os(alpha, corr, w)
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