Foundations of Quantitative Research in Political Science

Variables and Values: Examples

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Types of Variables: Definitions and Examples

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Dependent and Independent Variables: Examples

The Unit of Analysis: Examples

Dig Deeper

Galderisi, Peter. Understanding Political Science Statistics: Observations and Expectations in Political Analysis. Routledge, 2015.
- Chapter 2: "How do We Measure and Observe?"
Lewis-Beck, Michael S., Alan Bryman, and Tim Futing Liao. "Unit of Analysis." 2011. The SAGE Encyclopedia of Social Science Research Methods.

7. Quick Recap: Introduction to Variables