The goal of the project "e-stat" was to develop and provide a multimedia, web-based, and interactive learning and teaching environment in applied statistics called EMILeA-stat. The project was set up by 13 partners working at eight German universities: Augsburg, Bonn, Berlin (Humboldt-University), Dortmund, Karlsruhe, Münster, Oldenburg (leading university; now Aachen), and Potsdam. The project is also supported by further partners in advice and it cooperates with economic partners such as SPSS Software, BertelsmannSpringer Science+Business Media (Springer Verlag), and MD*Tech Method & Data Technologies (XploRe-Software). Within the project period about 70 people were co-working in developing und realizing the learning environment and its content. EMILeA-stat is developed as a system suitable for teaching statistics at schools, universities, and in further vocational training. Its design offers on the one hand the opportunity to tailor individual courses covering specific learning needs. On the other hand, EMILeA-stat serves as an environment for self-directed learning as well as an intelligent statistical encyclopedia. The support of learning and teaching by offering interactive visualizations, such as Java- Applets, is another main concept of EMILeA-stat. The URL of the learning environment EMILeA-stat is http://emilea-stat.rwth-aachen.de.