For another demonstration illustrating the idea of confidence level click here. And, . . . for yet another demonstration illustrating the idea of confidence level click here. An article that discusses the issue of Statistical Significance versus Practical Significance - click here. CAST stands for Computer-Assisted Statistics Teaching. It is a complete course in introductory statistics.
CAST is highly interactive.
Interaction with diagrams on most pages retains student attention and enhances learning. Dynamic graphics explain difficult concepts. Animations, simulations and other dynamic displays are extensively used. Advanced topics are included. With a computer-based approach, students can be taught topics that were once considered 'advanced'.