Causality Quote by Anonymous
““Correlation does not equal causality. When two things travel together, it is tempting to assume that one causes the other. Married people, for instance, are demonstrably happier than single people; does this mean that marriage causes happiness? Not necessarily. The data suggest that happy people are more likely to get married in the first place. As one researcher memorably put it, “If you’re grumpy, who the hell wants to marry you?””
About This Quote
Source Book: Statistics for Social Scientists, 2015
Correlation shows two variables move together, but does not prove one causes the other; causation requires deeper analysis.
In simple terms: Correlation ≠ causation.
Question assumptions about cause and effect.
Themes
Mood
Type
When to use this quote
- research design
- policy making
- media reporting
- personal decisions
Key Concepts
Questions to Reflect On
- What evidence would you need to prove causation?
- How might you test if a relationship is causal?
Correlation can be misleading without controlling for hidden factors.