Statistics › Section C · Probability › Topic C.4
Contingency tables
Cross-classify two categorical variables and every probability question from this chapter - joint, marginal, conditional, or, independence - becomes a division you can see. This topic reads two-way tables systematically.
In this topic
- Two variables, one table
- Anatomy of a contingency table
- Joint and marginal probabilities
- Conditional probabilities from a table
- AND and OR from cells
- Testing independence with a table
- Worked example: the warranty table
- Worked example: the two directions, carefully
- Tables of proportions
- Common mistakes to avoid
- Key takeaways
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