# Categorical ANOVA

• ### Statistics at Square One: Data Display and Summary

This site discusses types of data, stem and leaf plots, mean and median, histograms, and barcharts. Exercises are also provided, as well as their corresponding answers.
• ### Can a difference be important if it is not significant?

This short article discusses the difference between "important" and "statistically significant." The data used come from a study comparing male faculty salaries to female faculty salaries.
• ### What are outliers in the data?

This excerpt from Engineering Statistics Handbook gives a definition for and examples of outliers. A sub-page also discusses Grubbs' Test for Outliers
• ### Religious Fundamentalism and Optimism

This example is designed to test whether religiosity is correlated with optimism. The page describes the study, has a link to the data set, and describes the method of analysis. Analysis includes ANOVA and regression.
• ### One-way Anova of PTSD Data

This page was written as instructions for a SAS lab assignment, but the example can be used with other programs. The study compares three treatments for rape victims against each other and a control group to see which treatment is most effective at reducing Post Traumatic Stress Disorder symptoms.
• ### Control of Manufacturing Processes

This course features a complete set of lecture notes and problem sets with solutions. The objective of this subject is to understand the nature of manufacturing process variation and the methods for its control.
• ### Data Collection: Sourcebook of Criminal Justice Statistics

This sourcebook is an annual publication of statistics about the criminal justice system, including characteristics of the criminal justice system, attitudes toward crime, types of offenses, characteristics of people arrested, processing of defendants, and people in the correctional system. Datasets come in PDF format or spreadsheet format
• ### Data Collection: Bureau of Justice Statistics

This page from the Bureau of Justice Statistics contains links to statistics about the criminal justice system. Some topics include: crime & victims; law enforcement; courts and sentencing; and expenditure & employment.
• ### A Visualization Tool for One and Two-Way Analysis of Variance Applet

This Java applet helps students visualize features and factors of one and two-way ANOVA tables together with representational models and model parameters.
• ### A Visualization Tool for One and Two-Way Analysis of Variance Article

This is an article published in the Journal of Statistics Education describing the ANOVA Visualization Tool and how it can be used in class.