Toilet paper and detergent are the antecedent, where 890 of the 10,000 transactions include both items. Of the overall 10,000 transactions, 234 include toilet paper, detergent, and the consequent of clothing. Using the association rule, what is the confidence?
A) 0.0234
B) 20.826
C) 0.089
D) 0.2629

Question

Quizplus · Accepted Answer

The confidence of an association rule is calculated by dividing the number of transactions that include both the antecedent and the consequent by the number of transactions that include the antecedent. Here, the antecedent is toilet paper and detergent, and the consequent is clothing. There are 890 transactions with the antecedent and 234 transactions with both the antecedent and consequent. Thus, the confidence is 234 / 890 = 0.2629.

Toilet Paper and Detergent Are the Antecedent, Where 890 of the 10,000