Question $4(25$ marks$)$

Consider the market basket transaction shown below.

a$)$ Find an itemset $($of size $2$ or larger$)$ that has the largest support. $(5$ marks$)$

b$)$ Compute the support, confidence, and lift of the association rules below. Please interpret the results and draw out the marketing implications. $(20$ marks$)$

Rule $1)$ If Bread then Butter.

Rule $2)$ If Diapers and Milk then Beer.