Type of t-statistic returned by mnrfit for an ordinal model?

Is the t-statistic in the stats output of mnrfit(X,Y,'model','ordinal') 2-tailed or 1-tailed? Thank you!

Answer 1

[the cyclist]

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.

[Marian Shaw]

I see, thank you! So is the p-value calculated using something like tcdf or cdf?

[the cyclist]

Yes

[Jeff Miller]

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.

[Marian Shaw]

Thank you both @Jeff Miller @the cyclist !