We will begin by examining eye colour, a type of categorical data. In a group of 100 boys, let's say 25 of them had blue eyes. If we had a group of 200 girls, assuming the proportions were identical, ...

Central to the theme of hypothesis testing is the P-value, which is often misunderstood or misinterpreted. While it is often stated as the probability of the data having arisen by chance, the P-value ...