Classify a variable pair and choose its association display
The same students have the following two recorded variables
Variable 1: The service level reported by each student, chosen from low, medium or high
Variable 2: The risk band for each student's journey to school, recorded as 1, 2 or 3 from low to high
The recorded data set is small, so individual values can be retained when a grouped numerical display is suitable
In this investigation, the service level is the explanatory variable and the risk band is the response variable