construct two-way frequency tables and determine the associated row and column sums and percentages
3.1.1.3
use an appropriately percentaged two-way frequency table to identify patterns that suggest the presence of an association
3.1.1.4
understand an association in terms of differences observed in percentages across categories in a systematic and concise manner, and interpret this in the context of the data
3.1.3.1
identify the response variable and the explanatory variable
