The standard linear regression model does not apply when the effect of one explanatory variable on the dependent variable depends on the value of another explanatory variable. In this case, the ...

A two-valued qualitative variable can be represented by a single 0-or-1-valued "dummy" variable. If a qualitative variable has three or more possible values (e.g., make-of-car, or marital-status), ...

This is a preview. Log in through your library . Abstract A graphical technique for assessing explanatory variables in Cox's proportional hazards regression model is examined. The method arises from ...