>>> "John Fox" 14/07/2010 15:49:21 >>>
> the development version of the car package on R-Forge, which can be
> installed via install.packages("car",
repos="http://R-Forge.R-project.org";
> (and which has an argument named center, not location).
Would you consider a plaintive request to stick
Dear Marta,
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On
> Behalf Of martanair
> Sent: July-14-10 10:21 AM
> To: r-help@r-project.org
> Subject: Re: [R] levene.test
>
>
> how do I calculate th
how do I calculate the differences from the mean?
levene.test(filedati$y , filedati$fertilizzante, location="mean")
Is it right?
regards
marta
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On 2010-07-14 6:47, martanair wrote:
the value of the F-test is uncorrect.
If I calculate the Levene's Test for Homogeneity of Variance with SPSS I get
F = 5.128 Pr (> F) = 0.033
Why?
Why do you assume that SPSS provides the "correct" value?
what is the exact formula which R calculate Leven
io, Canada
web: socserv.mcmaster.ca/jfox
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On
> Behalf Of martanair
> Sent: July-14-10 8:48 AM
> To: r-help@r-project.org
> Subject: Re: [R] levene.test
>
>
> the value of
On Wed, 2010-07-14 at 05:47 -0700, martanair wrote:
> the value of the F-test is uncorrect.
> If I calculate the Levene's Test for Homogeneity of Variance with SPSS I get
> F = 5.128 Pr (> F) = 0.033
> Why?
> what is the exact formula which R calculate Levene's test for two groups?
> Thanks
> marta
the value of the F-test is uncorrect.
If I calculate the Levene's Test for Homogeneity of Variance with SPSS I get
F = 5.128 Pr (> F) = 0.033
Why?
what is the exact formula which R calculate Levene's test for two groups?
Thanks
marta
--
View this message in context:
http://r.789695.n4.nabble.com
On Wed, 2010-07-14 at 05:07 -0700, martanair wrote:
> I am trying to use Levene's test (of package car), but I do
> not understand quite well how to use it. '?levene.test' does
> not unfortunately provide any example. My data are in a data
> frame and correspond to 1 factor plus response. Could
On 2010-07-14 6:07, martanair wrote:
I am trying to use Levene's test (of package car), but I do
not understand quite well how to use it. '?levene.test' does
not unfortunately provide any example. My data are in a data
frame and correspond to 1 factor plus response. Could
someone please give me
I am trying to use Levene's test (of package car), but I do
not understand quite well how to use it. '?levene.test' does
not unfortunately provide any example. My data are in a data
frame and correspond to 1 factor plus response. Could
someone please give me an example about how to use the com
On Wed, 2010-07-14 at 06:50 -0300, Bernardo Rangel Tura wrote:
> On Wed, 2010-07-14 at 01:37 -0700, martanair wrote:
> > I am trying to use Levene's test (of package car), but I do
> > not understand quite well how to use it. '?levene.test' does
> > not unfortunately provide any example. My data
On Wed, 2010-07-14 at 01:37 -0700, martanair wrote:
> I am trying to use Levene's test (of package car), but I do
> not understand quite well how to use it. '?levene.test' does
> not unfortunately provide any example.
Err, yes it does, several examples in fact.
> My data are in a data
> frame
On Wed, 2010-07-14 at 01:37 -0700, martanair wrote:
> I am trying to use Levene's test (of package car), but I do
> not understand quite well how to use it. '?levene.test' does
> not unfortunately provide any example. My data are in a data
> frame and correspond to 1 factor plus response. Could
I am trying to use Levene's test (of package car), but I do
not understand quite well how to use it. '?levene.test' does
not unfortunately provide any example. My data are in a data
frame and correspond to 1 factor plus response. Could
someone please give me an example about how to use the com
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