Hell all,

 

I'm curious about the level of effect nonnormal distributions have on imputation's efficacy.  Specifically, I understand that the EM algorithm works on the assumption of normally distributed data.  However, if one imputes before transformation of skewed data, are the estimates markedly distorted? 

 

Thanks for any input,

 

Jason

 

**************************************************************

Jason C. Cole, PhD

Statistician

Department of Psychiatry and Biobehavioral Sciences

Cousins Center for Psychoneuroimmunology

300 UCLA Medical Plaza, Room 3148

Los Angeles, CA  90095-7057

Tel:   310 267 4390

FAX: 310 794 9247

E-mail: [EMAIL PROTECTED]

http://www.cousinspni.org

**************************************************************

 

 

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