algorithm of levene

View: New views

2 Messages — Rating Filter: Alert me

algorithm of levene

by Rodrigo Briceño :: Rate this Message:

Reply to Author | View Threaded | Show Only this Message

Some parts of this message have been removed. Learn more about Nabble's security policy.

Dear SPSS users. I am recently trying to replicate the way SPSS uses to calculate the Levene's test for homogeneity of variances.

I reviewed the algorithm of calculation in SPSS but I have a problem because I do not know which elements are considered (since the variables are not self explained).

Does anybody has some insight about this test. My purpose is to do the calculation by hand (just in order to understand the logic the test has).

Thanks.

--
__________________________________________________________________

__________________________________________________________________

Rodrigo Briceño
Project Manager
Sanigest Internacional

+506 22-91-12-00 ext. 113 Oficina Costa Rica
+506 22-32-08-30 Fax
mail@...
www.sanigest.com

MSN: jbric98@...
SKYPE: rbriceno1087

_____________________

This communication contains legal information which is privileged and confidential. It is for the exclusive use of the address and distribution, dissemination, copying or use by others is strictly prohibited. If you have received this communication by error, please delete the original message and e-mail us.

Esta comunicación contiene información legal privilegiada y confidencial para el uso exclusivo del destinatario. La distribución, diseminación, copia u otro uso por terceras personas es estrictamente prohibida. Si usted ha recibido esta comunicación por error, le rogamos borrar el mensaje original y comunicárnoslo a esta misma dirección.

Re: algorithm of levene

by García-Granero :: Rate this Message:

Reply to Author | View Threaded | Show Only this Message

Hi Rodrigo

Levene test is just an ANOVA on the absolute residuals: ABS(value-sample
mean). See:

http://www.itl.nist.gov/div898/handbook/eda/section3/eda35a.htm

HTH,
Marta GG

Rodrigo Briceño wrote:

> Dear SPSS users. I am recently trying to replicate the way SPSS uses
> to calculate the Levene's test for homogeneity of variances.
>
> I reviewed the algorithm of calculation in SPSS but I have a problem
> because I do not know which elements are considered (since the
> variables are not self explained).
>
> Does anybody has some insight about this test. My purpose is to do the
> calculation by hand (just in order to understand the logic the test has).
>

--

For miscellaneous SPSS related statistical stuff, visit:
http://gjyp.nl/marta/

=====================
To manage your subscription to SPSSX-L, send a message to
LISTSERV@... (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD