ABSTRACT
Imagine a lecture theatre of 100 students. I give half of them tea to drink and the other half coffee; the 50 who receive coffee all die. Which statistical test should I use to determine whether the coffee was poisoned? The answer is ‘none’, as the answer is obvious. But what if I decided to try to improve my teaching, as 10% of students fall
Introduction ............................................................................................................ 455 Levels of Measurement .......................................................................................... 456
Nominal ............................................................................................................. 456 Ordinal............................................................................................................... 457 Interval and Ratio .............................................................................................. 457
Hypothesis Testing ................................................................................................. 457 Signicance ............................................................................................................460 Condence Intervals .............................................................................................. 461 Tests Comparing Groups ........................................................................................ 462 ANOVA ..................................................................................................................464 Regression ..............................................................................................................465 Conclusion .............................................................................................................466 Further Reading .....................................................................................................466
