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  1. Testing differences between p and π
  2. More than two categories
  3. Chi square test of independence
    1. Introduction
    2. Calculations
    3. Assumptions
  4. Reporting results
  5. Exercises

precision consulting

For a practical application of Chi Square in marketing see "Glimpses into Application of Chi-Square Tests in Marketing" by P.K. Viswanathan.

Analysis Tools
by Richard Lowry

Fisher's Exact Test
College of Saint Benedict | Saint John's University

Analysis Lab

Instructional Demos

Chi Square Test of Deviations from Expected Frequencies
Rice Virtual Lab in Statistics

2x2 Contingency Tables
Rice Virtual Lab in Statistics

Chi Square Tutorial
by Jeff Connor-Linton

Chi Square and tests of contingincy tables
by David Stockburger

Hypothesis testing for categorical data, Inference for contingency tables
by Keith Dear

The Chi Squared tests
by T. D. V. Swinscow; revised by M. J. Campbell

Contingency table: Chi Squared Test
by Will Hopkins of the University of Otago

Chi Square
by G. David Hopkins

Tests for categorical variables (PDF)
by Bruce Weaver

Chi Square Lesson
by Amar Patel

Chi Square Distribution
by Wikipedia

An Introduction to Categorical Data Analysis (Wiley Series in Probability and Statistics. Applied Probability and Statistics)
by Alan Agresti

Categorical Data Analysis Using the SAS System
by Maura E. Stokes, Charles S. Davis, Gary G. Koch

Statistical Methods for Categorical Data Analysis
by Daniel A. Powers, Yu Xie, Daniel A. Powerw, Dan L. Powers, Xu Xie

Fundamental Statistics for the Behavioral Sciences with CDRom
by David Howell