help fapara ------------------------------------------------------------------------------------------------ Title Parallel analysis for pca and factor analysis Syntax fapara [, pca reps(integer) seed(integer) twoway_options ] options description ------------------------------------------------------------------------------------------ Main pca specify parallel analysis for pca (default is for factor analysis) reps number of replications (default 1) seed seed value for random number generation twoway_options Twoway graph options used in plotting eigenvalues ------------------------------------------------------------------------------------------ Description fapara performs parallel analysis after running pca or factor analysis. Examples . factor v1 v2 v3 v4 . fapara . fapara, reps(10) seed(123456) . pca v1 v2 v3 v4 . fapara, pca reps(10) seed(123456) . fapara, reps(100) title(new data) yline(.5) Acknowledgements Dirk Enzmann found an error in the sample size computation and provided other helpful comments. Author Phil Ender Statistical Consulting Group UCLA Academic Technology Services ender@ucla.edu