In reviewing purchases at Costco on a given Saturday, 385 transactions out of 1,000 included toilet paper, detergent, and clothing or {toilet paper, detergent} = {clothing}. Calculate the support of the association rule.
A) 0.385
B) 1.385
C) 1,000
D) 3.85

Question

In reviewing purchases at Costco on a given Saturday, 385 transactions out of 1,000 included toilet paper, detergent, and clothing or {toilet paper, detergent} => {clothing}. Calculate the support of the association rule.
A) 0.385
B) 1.385
C) 1,000
D) 3.85

Quizplus · Accepted Answer

The support of an association rule is calculated as the number of transactions containing both items (or itemsets) in the rule divided by the total number of transactions. Here, 385 out of 1,000 transactions included both itemsets, so the support is 385/1000 = 0.385.

In Reviewing Purchases at Costco on a Given Saturday, 385