In reviewing purchases at Costco on a given Saturday, 645 transactions out of 1,250 included toilet paper, detergent, and clothing or {toilet paper, detergent} = {clothing}. Calculate the support of the association rule.
A) 0.516
B) 1.516
C) 1,250
D) 6.45

Question

In reviewing purchases at Costco on a given Saturday, 645 transactions out of 1,250 included toilet paper, detergent, and clothing or {toilet paper, detergent} => {clothing}. Calculate the support of the association rule.
A) 0.516
B) 1.516
C) 1,250
D) 6.45

Quizplus · Accepted Answer

The support of an association rule is calculated as the number of transactions including all items in the rule (both antecedent and consequent) divided by the total number of transactions. Here, 645 out of 1,250 transactions included all items, so the support is 645 / 1,250 = 0.516.

In Reviewing Purchases at Costco on a Given Saturday, 645