Here is Market Basket data for 1,000 transactions at a Drug Store.All transactions involve 1 or 2 drugs.Use the table below to answer the following questions.

-Refer to the table above.What is the definition of support for Drug A and Drug B?
A)The probability that Drug A will be purchased.
B)The probability that Drug B will be purchased.
C)The probability that both Drug A and Drug B will be purchased.
D)The probability that Drug A will be purchased given that Drug B has been purchased.

Question

Here is Market Basket data for 1,000 transactions at a Drug Store.All transactions involve 1 or 2 drugs.Use the table below to answer the following questions.
 
-Refer to the table above.What is the definition of support for Drug A and Drug B?
A)The probability that Drug A will be purchased. 
B)The probability that Drug B will be purchased. 
C)The probability that both Drug A and Drug B will be purchased. 
D)The probability that Drug A will be purchased given that Drug B has been purchased.

Quizplus · Accepted Answer

Support refers to the frequency of occurrence of an itemset in a dataset. In this case, the support for Drug A and Drug B is the probability that both drugs will be purchased in a transaction, which is option C. Option A and B refer to the probability of purchasing each drug separately, while option D refers to conditional probability, which is not relevant in this question.

Here Is Market Basket Data for 1,000 Transactions at a Drug