which statistical test is used to test for nonlinearity which is difficult to test for linearity in regression why are linear tests difficult in regression what is the difficulties of testing linearity in regression which is an example of the difficult to test linearity in regression? what test is required to test linearity which method is used when analyzing the goodness of fit of a regression when to use non logistic regression why is testing nonlinearity difficult why does linear regression have a low coefficient in test why do we test linearity when to test for linearity how to determine if regression is linear a testing problem does not include the testing of the linearity of the regression? why are the tests of goodness of fit in regression difficult? why do regression models require goodness of fit test what test is used to test a linearity of a regression what test does leo breiman use on regression analysis __________ does the goodness of fit test fail the linearity of regression problem brieman's problem definition