Levene's test output

Hello,

The Pr(>F) is a regular p-value, with the usual meaning.

Rui Barradas

Em 21-06-2013 11:05, pieter escreveu:

k.
Thanks.
Sorry i'm not the biggest statician, but I still find the output write
out not the clearest of all. Anyway, that is probably a personal
problem. :-)

Just one question. the Pr(>F) is just the regular p value, right? so
above the treshold means equal variance?

Thanks alot.

Pieter

On vr 21 jun 2013 11:56:06 CEST, Rui Barradas wrote:

Hello,

You need to know what is the Levene test, that output is as clear as
water. 75 + 283 == 358. Minus two groups gives 356.
See

http://en.wikipedia.org/wiki/Levene%27s_test

Hope this helps,

Rui Barradas

Em 21-06-2013 09:12, pieter escreveu:

Hey,
I don't really get the output of the performed Levene's test.
So in short.
two data sets, one with 75 elements, one with 283.
And I want to check whether they have the same variance.

I did a LeveneTest
And this is the output:

Levene's Test for Homogeneity of Variance (center = median)
         Df F value   Pr(>F)
group   1  10.948 0.001033 **
        356
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

So I would think that H0 is being rejected? for everything except
99.9%?
But what does the 356 mean?
Is this test performed correctly? group is a vector with 1's and 2's
appointing the two datasets...



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