03 - Contingency Tables

How do we check for any association between two categorical variables?

Practice

Chapter 3 # 21,23,28, Read pages 24-30

Vocabulary

Cell, Marginal Distribution, Conditional Distribution, Independent

Study Questions

1. What does it mean for two variables to be independent?
2. What are row, column, and table percents in contingency tables? How do you determine each?
3. What are conditional distributions? Explain with an example.
4. Why is it important to pay attention to the number of cases when interpreting the two-way tables?

Resources

1. Slide Deck: 03_Contingency_tables.pdf