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Hausman test; under the null both models are consistent but one of them is more efficient, under the alternative, only one model is consistent
hausman(x, y, omit = FALSE, ...)# S3 method for ivreg hausman(x, y, omit = FALSE, ...)# S3 method for micsr hausman(x, y, omit = NULL, ...)
# S3 method for ivreg hausman(x, y, omit = FALSE, ...)
# S3 method for micsr hausman(x, y, omit = NULL, ...)
an object of class "htest".
"htest"
the first model,
the second model
a character containing the effects that are removed from the test
further arguments
Yves Croissant
HAUS:78micsr