CIrdif: Confidence Interval for the difference in Correlation...

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

Description

Will construct the CI for a difference in two correlations for a desired level

Usage

1
CIrdif(r1, r2, n1, n2, level = 0.95)

Arguments

r1

Correlation 1

r2

Correlation 2

n1

Sample size for r1

n2

Sample size for r2

level

Significance Level for constructing the CI, default is .95

Details

Constructs a confidence interval based on the standard error of the difference of two correlations (r1 - r2), sed <- sqrt((1-r1^2)/n1 + (1-r2^2)/n2)

Value

Returns a table with 4 elements

DifR

Observed Difference in correlations

SED

Standard error of the difference

LCL

Lower Confidence Limit of the CI

UCL

Upper Confidence Limit of the CI

Author(s)

Thomas D. Fletcher tom.fletcher.mp7e@statefarm.com

References

Cohen, J., Cohen, P., West, S. G., & Aiken, L. S. (2003). Applied multiple regression/correlation analysis for the behavioral sciences (3rd ed.). Mahwah, NJ: Lawrence Erlbaum.

See Also

rdif.nul

Examples

1
2
# From ch. 2 in Cohen et al (2003)
CIrdif(.657, .430, 62, 143)

psychometric documentation built on May 2, 2019, 9:38 a.m.