Analysis of Means: A Graphical Method for Comparing Means, Rates, and Proportions 
The analysis of means (ANOM) is a graphical procedure for comparing a collection of means, rates, or proportions to see if any of them differ significantly from the overall mean, rate, or proportion. The ANOM is a type of multiple comparison procedure. The results of the analysis are summarized in an ANOM decision chart. This chart is similar in appearance to a control chart. It has a centerline, located at the overall mean (rate, or proportion), and upper and lower decision limits. Group means (or rates, or proportions) are plotted on this chart and if one falls beyond a decision limit then that group is said to be statistically different from the overal mean (rate or proportion).
This web site was inspired by Peter Wludyka and Karen Copeland, authors of the book Analysis of Means: A Grpahical Method for Comparing Means, Rates, and Proportions. The goal of this site is to provide an introduction to ANOM methods and more importantly, provide links to research papers, software solutions, and other ANOM resources.
