Posts Tagged ‘ Chi-square ’

Mining for relations between nominal variables

May 1, 2012
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Mining for relations between nominal variables

The task today was to find what variables had significant relations with an important grouping variable in the big dataset I’ve been working with lately.  The grouping variable has 3 levels, and represents different behaviours of interest.  At first I … Continue reading →

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Margin of error, and comparing proportions in the same sample

October 15, 2010
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Margin of error, and comparing proportions in the same sample

I recently tried to answer a simple question, asked by @adelaigue. Actually, I thought that the answer would be obvious... but it is a little bit more compexe than what I thought. In a recent pool about elections in Brazil, it was mentionned in a ...

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