Categorical Data Analysis

General Formula

Expected vs Observed Frequencies

Degrees of Freedom

Assumptions and Conditions

Testing Specified Distributions

Multinomial Distribution

Expected Frequency Calculation

Procedure and Examples

Testing for Normality

Testing for Uniformity

Two-Way Contingency Tables

Null and Alternative Hypotheses

Expected Frequency Calculation

Degrees of Freedom Formula

Interpretation of Results

Measures of Association

Comparing Multiple Populations

Null and Alternative Hypotheses

Relationship to Test of Independence

Procedure and Examples

Definition and Interpretation

Confidence Intervals for Odds Ratios

Relative Risk vs Odds Ratio