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September 22nd, 2015, 02:17 AM   #1
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Probability scales (logit, probit etc.)

Hi,
Recently I have been pushed into teaching one of the courses in statistics (Categorical data analysis). Since it is not my main field of interests and I have to learn most of the stuff, I would like you to ask you about the usage and application of probability scales.

The most popular are logit, probit and Gumbel probability scales (at least this is what I have read). But there is no explication given in which situations it is recommended to use any of these scales and, most of all, why do we scale the data?

I would appreciate any help.
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September 22nd, 2015, 02:30 PM   #2
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The main point of scales (from my experience - I am not familiar with these names) is to get a plot which (to the eye) is roughly linear.
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