Several new graphical methods for use with compositional data and probability plots are developed and illustrated using the software package (Wolfram (1999)). Graphical techniques that permit inferences regarding the distributional properties of the data are presented and illustrated. Procedures...

Although three-level factorial designs with quantitative factors are not the most efficient way to fit a second-order polynomial model, they often find some application, when the factors are qualitative. The three-level orthogonal designs with qualitative factors are frequently used, e.g., in...