Statlab - Features

General flexible interactive tool for applied statistics courses hides options unless asked for web based, written in Java, freely availably on the Internet multilingual (presently Dutch and English) contains several screening and optimisation case studies automatic grading system by sending an email to the teacher students generally consider using Statlab as a stimulating teaching environment

Screening determine the significant factors in a (generally chemical) process generation of two-level factorial designs using Franklin and Bailey's algorithm students must decide on design options, such as fractions, blocks, factor settings, aliasing structure, centre points, replication and randomisation forces students to graphically inspect residuals and identify outliers allows students to ask questions to virtual process engineer

Optimisation uses steepest ascent to find optimal settings for the significant effects forces students to decide on factor settings, type of design, step size, etc. program flow is determined by choices of the student visualisation of fitted response surfaces