# 2: Bivariate Statistics - Basics

- Page ID
- 7791

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All of the discussion so far has been for studies which have a single variable. We may collect the values of this variable for a large population, or at least the largest sample we can afford to examine, and we may display the resulting data in a variety of graphical ways, and summarize it in a variety of numerical ways. But in the end all this work can only show a single characteristic of the individuals. If, instead, we want to study a *relationship*, we need to collect two (at least) variables and develop methods of descriptive statistics which show the relationships between the values of these variables.

- 2.1: Terminology - Explanatory/Response or Independent/Dependent
- If we want to study a relationship, we need to collect two (at least) variables and develop methods of descriptive statistics that show the relationships between the values of these variables.