HOME Module List Site Index About This Site glossary" Resources Innovative Technology Center UT Statistics Courses
Using SAS Choose Design ANOVA Compare Means Regression Examples
Comparing Means      

PAGE UNDER CONSTRUCTION

When you run ANOVA models to compare treatments in DAWG, you are using a %MMAOV statement in your SAS Editor Window.     What is the %MMAOV macro?

%MMAOV automatically uses Fisher's Least Significant Difference to run a mean separation test. Results are presented as letters, following a common convention, and two means that have no letter in common are statistically different.

In this module, we provide a resource for learning about mean separation tests, and the more general method to compare treatments, called contrasts. Click here to learn how to choose between these two.

Choose a topic from the table of contents below to learn more.

Mean Separation

What is mean separation?

Using %MMAOV for mean separation

%MMAOV options

Slicing interactions

Comparison of methods
      LSD
      Duncan's
      Tukey's
      Bonferroni 
      Scheffé

 

 

Contrasts

What is a contrast?

What are orthogonal contrasts?

Create contrasts for my experiment

Use %MMAOV to run contrasts

Use orthogonal polynomials

Philosophical difference between contrasts and mean separation

Home | Contact us | Module list & summary | Glossary/Terms | About this site | Stats courses | Links | Index