Levene's test output
Dear pieter, On Fri, 21 Jun 2013 10:12:26 +0200
pieter <dencoussie at gmail.com> wrote:
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%?
0.001033 is the p-value for the null hypothesis of equal variances.
But what does the 356 mean?
The residual df for the test.
Is this test performed correctly?
I certainly hope so. John ------------------------------------------------ John Fox Sen. William McMaster Prof. of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/
group is a vector with 1's and 2's appointing the two datasets... [[alternative HTML version deleted]]
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