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st: R: Shapiro's


From   "Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: R: Shapiro's
Date   Mon, 3 Dec 2012 19:55:42 +0100

Miguel may want to visually inspect his data to make up his mind about their
distribution and/or take a look at:
 - help qnorm -;
- help pnorm -.

Kind Regards,
Carlo
-----Messaggio originale-----
Da: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di MIGUEL ANGEL
GRUPO DE INVESTIGACIO ODONT SIMANCAS PALLARES
Inviato: lunedì 3 dicembre 2012 19:16
A: statalist@hsphsun2.harvard.edu
Oggetto: st: Shapiro's

Hi. Im using Stata.

Im trying to conduct several analysis including t test and ANOVA. When i try
to perform normality analysis using shapiro wilk test it say that the data
is not normally distributed. But, when i perform shapiro francia test (with
the same data) it says that the are normally distributed...

Which of these results should I use (Wilk or Francia)?

Thanks in advance,

--

Miguel Angel Simancas. OD. MSc (C).
GITOUC - GITOUC Research Group
Departamento de Investigación - Research Department Facultad de Odontología
- Faculty of Dentistry Universidad de Cartagena - University of Cartagena
Tel: +57 (5) 6698172. Ext: 110.

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