defining an ordinal model which ordinal variable is categorical? how many levels of the ordinal variable to test nonlinearity how to test if univariate is nonlinear why is an ordinal variable nonlinear why would you consider an ordinal variable continuous or categorical? what is the categorical version of an ordinal variable why is an ordinal variable categorical or independent what model is used to check if a nonlinear deviation is significant what is the definition of categorical variable which data set is used to show that ordinal variables are nonlinear? how does nonlinearity of ordinal variables test when treating an ordinal variable as continuous, the deviation from nonlinearity is quizlet how to determine whether an ordinal variable is continuous does the ordinal variable have nonlinear levels how to test for nonlinear deviations of ordinal variables why would one consider an ordinal variable as continuous _______ is an ordinal variable with four levels. which model uses categorical variable instead of continuous which is a useful way to test whether nonlinearity is significant?