This learning resource focuses on categorical data analysis through the use of two-way relative frequency tables. Students will learn how to calculate and interpret joint, marginal, and conditional relative frequencies from these tables. The document includes definitions and detailed explanations of each type of frequency, such as joint relative frequency (the ratio of a value in the inner cells to the grand total), marginal relative frequency (the ratio of a row or column total to the grand total), and conditional relative frequency (the ratio of a joint frequency to a specific row or column total). There are worked examples for practice, including calculations of missing frequencies, followed by interleaved tasks that encourage students to find marginal and conditional relative frequencies. Finally, reflective, analytical, and challenge tasks encourage deeper thinking about the implications of changing conditions in frequency calculations.