zero.r.test.second: A significance testing of a product moment correlation using...
In rpsychi: Statistics for psychiatric research

Description Usage Arguments Details Value Author(s) References See Also Examples

zero.r.test.second conducts a significance testing of a product moment correlation using published work.

1	zero.r.test.second(r, n, sig.level = 0.05, digits = 3)

`r`	a numeric contains the product moment correlation
`n`	a numeric contains the sample size
`sig.level`	a numeric contains the significance level (default 0.05)
`digits`	the specified number of decimal places (default 3)

This function conducts a significance testing of a product moment correlation using published work. Statistical power is calculated using the following specifications:

(a) small (r = 0.10), medium (r = 0.30), and large (r = 0.50) population effect sizes, according to the interpretive guideline for effect sizes by Cohen (1992)

(b) sample size specified by n

The returned object of zero.r.test contains the following components:

`correlation`	returns a product moment correlation, its' approximate confidence interval for population correlation, and standard error
`power`	returns statistical power for detecting small (r = 0.10), medium (r = 0.30), and large (r = 0.50) population effect sizes

Yasuyuki Okumura
Department of Social Psychiatry,
National Institute of Mental Health,
National Center of Neurology and Psychiatry
yokumura@blue.zero.jp

Cohen J (1992) A power primer. Psychological Bulletin, 112, 155-159.

zero.r.test, samplesize.r