ABSTRACT
The Hasse diagram method allows the user to describe an experimental design by listing the factors and the nesting relationships among the factors. It provides an interactive diagram that lets the user visualize even complex crossing and nesting relationships (Bailey 1992, Lohr 1995, Oehlert 2000, Iverson and Marasinghe 2005). From the diagram, the system determines the appropriate linear model, expected mean squares, and ANOVA table with F-tests for each of the effects. The user can interactively change the design and see the effects on the output. The Hasse diagram can be used to describe more general designs, but the calculations derived from it apply only to balanced designs.
