Contingency Tables

Statistics · Axiom Academy

Understanding Cross-Tabulation and Frequency Analysis 1 What is a Contingency Table? 2 Structure: Rows, Columns, and Totals Rows: Categories of the first variable Columns: Categories of the second variable Cells: Frequencies for each combination Margins: Row totals, column totals, and grand total 3 Joint and Marginal Frequencies 4 Reading and Interpreting Tables Row percentages: What % of this row falls in each column? Column percentages: What % of this column falls in each row? Overall percentages: What % of total does each cell represent? 5 Preparing for Chi-Square Tests O: Observed frequency (actual cell count) E: Expected frequency (if variables were independent)

This is the written version of the interactive lesson above. See the full Statistics course.