ssd2sd: Convert sample standard deviation into unbiased one

In rpsychi: Statistics for psychiatric research

Description

ssd2sd converts a sample standard deviation into unbiased one.

Usage

ssd2sd(n, ssd)

Arguments

n	a numeric contains the sample size
ssd	a numeric contains the sample standard deviation

Value

Return a numeric containing the unbiased standard deviation.

Author(s)

Yasuyuki Okumura
Department of Social Psychiatry,
National Institute of Mental Health,
National Center of Neurology and Psychiatry
[e-mail]

See Also

r2cov, svar, ssd, svar, lower2R

Examples

data(infert)
ssd2sd(nrow(infert), ssd(infert$age))
sd(infert$age)

rpsychi documentation built on May 1, 2019, 10:10 p.m.