Statistical power for the significance testing of a product moment correlation

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Description

This is an internal function. power.r computes power for the significance of a product moment correlation.

Usage

1
power.r(n, delta, sig.level = 0.05)

Arguments

n

sample size

delta

population correlation

sig.level

a numeric contains the significance level (default 0.05)

Value

Return a numeric containing the statistical power.

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 (1988). Statistical power analysis for the behavioral sciences (2nd ed). Hillsdale, NJ: Erlbaum.

Examples

1
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##Cohen (1988) ex.3.1
power.r(n=50, delta=0.3, sig.level=0.05)

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