Type of t-statistic returned by mnrfit for an ordinal model?
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Is the t-statistic in the stats output of mnrfit(X,Y,'model','ordinal') 2-tailed or 1-tailed? Thank you!
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the cyclist
on 4 Feb 2023
The t-statistic does not have "tailedness". It is a ratio of the effect coefficient to the standard error.
One might use the t-statistic to perform a hypothesis test that has tailedness, but the statistic itself does not.
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Jeff Miller
on 7 Feb 2023
Just to elaborate slightly, the p value that you compute with tcdf will be one-tailed, and it would be appropriate to double that value for a two-tailed test.
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