2-way ANOVA (Within-subjects)

Of all the ANOVA procedure this one tends to take the longest to get to grips with. It's not that doing the analysis is hard (it is essentailly the same as the 1-way within-subjects procedure). It's just the it is very easy to enter the factors incorrectly. In the demonstration, drivers speeds on both motorways and b-roads (1 factor - road type) and in both the north and the south (the second factor - location).