Ch. 14 Chi Squared Test
Sections covered: 14.3
14.3 Two-Way Contingency Tables
Skip: pp. 639-643, including “Testing for Homogeneity”
Focus on “Testing for Independence (Lack of Association)”
Notes on the chi square test formula on p. 644:
Write the null hypothesis as a sentence, not as in the book. (For example: “Class and Survival Status are independent.”)
“estimated expected” in the textbook is the same as “expected” used in class
\(i\) and \(j\) refer to the number of rows and columns in the table
