Effect Size Computation for lm

Description

Creates adjusted effect sizes for linear regression.

Usage

  effect.size(lm.out)

Arguments

Details

The function effect.size produces a family of effect size corrections for the R-squared metric produced from an lm class object. Suggestions for recommended correction are supplied, based on Yin and Fan (2001).

Value

Returns adjusted R-squared metric.

Author(s)

J. Kyle Roberts <kyler@smu.edu>

References

Yin, P., & Fan. X. (2001) Estimated R^2 shrinkage in multiple regression: A comparison of different analytical methods. The Journal of Experimental Education, 69, 203-224.

See Also

regr,yhat

Examples

     require ("MBESS")
     data(HS.data)
     attach(HS.data)
     lm.out<-lm(deduct~addition*arithmet)
     effect.size(lm.out)
     detach(HS.data)

Results