Sigma notation
PDF handout from Mathcentre
iPod video from Mathcentre
Case study: "Measuring the competitiveness of sport: are the top teams getting too strong?" (Concentration ratio)
Case study: "Is the Scottish Premier League less competitive than its English Counterpart?" (Hirschman-Herfindahl Index)
Case study: "Measuring health improvements for a cost effectiveness analysis"
Self-tests: diagnostic test and exercise from Mathcentre
Matrices
6 Quick Reference leaflets from Mathcentre