From the website home page:
statstutor offers statistics support materials, free of charge, to students, lecturers and everyone looking for post-16 statistics help. We have several types of resources to help you:
Case Study Videos - watch and listen as a tutor helps students handle projects involving real data;
Video Tutorials - watch and listen to a tutor working through important topics in statistics;
Teach Yourself - these paper based resources provide in-depth treatment of important topics, with theory and worked examples (sometimes written to accompany the video tutorials above);
Tests and Quizzes - on specific topics to enable you to gauge your competency and decide whether further work is required;
Facts & Formulae Leaflets - electronic versions of the very popular leaflets distributed by the Higher Education Academy MSOR Subject Centre.