On 18/10/2013 15:01, Vincent Guyader wrote:
Hi everyone,
If I compute a "Ordered Logistic or Probit Regression" with the polr
function from MASS package. the summary give me : coefficients, Standard
error and Tvalue.. but not directly the p.value.
I can compute "manualy" the Pvalue, but Is there a way to directly obtain
the pa.value, and I wonder why the p.valeu is not directly calculated, is
there a reason?
How are you going to calculate the P values? Have you read the book for
which this is support software?: it explains why such Wald tests are
inappropriate and that the asymptotic theory can be wildly misleading.
exemple :
house.plr <- polr(Sat ~ Infl + Type + Cont, weights = Freq, data = housing)
house.plr
summary(house.plr, digits = 3)
Regards
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