

   HHaarrvveeyy--CCoolllliieerr--TTeesstt

        raintest(formula, data=list())

   AArrgguummeennttss::

    formula: a symbolic describtion for the model to be tested

       data: an optional data frame containing the variables in
             the model.  By default the variables are taken
             from the environment which 'harvtest' is called
             from

   DDeessccrriippttiioonn::

        `harvtest' performs the Harvey-Collier-Test for linear-
        ity.

   DDeettaaiillss::

        The Harvey-Collier-Tests examines if the true relation-
        ship is linear versus a convex or concave relationship
        under the alternative. The test statistic under null
        hypothesis follows a t distribution with df degree of
        freedom.

   VVaalluuee::

        A list with class `"htest"' containing the following
        components:

   statistic: the value of the test statistic.

    p.value: the p-value of the test.

     method: a character string indicating what type of test
             was performed.

   data.name: a character string giving the name(s) of the
             data.

   AAuutthhoorr((ss))::

        Torsten Hothorn <hothorn@amadeus.statistik.uni-dort-
        mund.de>

   RReeffeerreenncceess::

        Kraemer, W., Sonnberger, H. (1986): The linear regres-
        sion model under test

   SSeeee AAllssoo::

        `lm'

   EExxaammpplleess::

        x <- c(1:30);
        y <- x^2 + rnorm(30,0,2);
        formular <- y ~ x;
        harv <- harvtest(formular);
        qt(0.95, harv$parameter[1]);

