A significance testing of a product moment correlation using published work

Description

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

Usage

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

Arguments

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)

Details

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

(c) significance level specified by sig.level

Value

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

Author(s)

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

References

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

See Also

zero.r.test, samplesize.r

Examples

1
zero.r.test.second(r = 0.571, n = 9)

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