1. A researcher wants to know whether equal numbers of undergraduates consume alcohol in three different categories. In which order should the categories be entered to ensure the χ2 goodness-of-fit test can be correctly calculated?

a) Teetotalers, healthy drinkers (less than 27 units per week), unhealthy drinkers (28 or more units per week)

b) Unhealthy drinkers, healthy drinkers, teetotalers

c) Healthy drinkers, teetotalers, unhealthy drinkers

d) It does not matter