1. Why do linguists need statistics? -- 2. Tables and graphs -- 3. Summary measures -- 4. Statistical inference -- 5. Probability -- 6. Modelling statistical populations -- 7. Estimating from samples -- 8. Testing hypotheses about population values -- 9. Testing the fit of models to data -- 10. Measuring the degree of interdependence between two variables -- 11. Testing for differences between two populations -- 12. Analysis of variance -- ANOVA -- 13. Linear regression -- 14. Searching for groups and clusters -- 15. Principal components analysis and factor analysis.