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 paper proposes a method for analysing relations between a qualitative variable and a group of quantitative variables. The method is an extension of known results concerning the analysis of ...

This is a preview. Log in through your library . Abstract Many interesting sociological questions pertain to how the association between two variables depends on a third variable. In sociological ...

Expertise from Forbes Councils members, operated under license. Opinions expressed are those of the author. A human craving for simplicity is hindering retail’s optimization of artificial intelligence ...