In introductory statistics, only a few computer-based examples are used in the course. The first XploRe example gives an interface for a standard set of these methods. The purpose of the macro is to show the different techniques for explorative analysis. Different tools can be used, for example a barchart can be computed for each variable, although it may not be reasonable in all cases. Figure 4 shows an explorative analysis of the continuous variable amount .
Main issues are random variables, sampling theory, parameter estimation and hypothesis testing.
The XploRe macro list for Statistics II is shown in Figure 5 . Areas with positive sign are displayed in red and areas with negative sign are displayed in blue. For all these distributions the parameters can be modified, and so it is possible to display the effect of moving the distribution along the horizontal axis or to illustrate the effect of changing the scale parameter. Advanced statistics courses Advanced courses, in which XploRe is used by students, cover multivariate statistical methods, non- and semiparametric modelling, option pricing and interactive statistics. The macro collection for both courses consists of routines that can be used independently from each other.