Assume that we have a dataset containing information about 200 individuals. One hundred of these individuals have purchased life insurance. A supervised data mining session has discovered the following rule:
IF age

Question

Assume that we have a dataset containing information about 200 individuals. One hundred of these individuals have purchased life insurance. A supervised data mining session has discovered the following rule:
 IF age < 30 & credit card insurance = yes
THEN life insurance = yes
Rule Accuracy: 70%
Rule Coverage: 63%
How many individuals in the class life insurance= no have credit card insurance and are less than 30 years old?
A) 63
B) 70
C) 30
D) 27

Quizplus · Accepted Answer

Since the rule coverage is 63%, we can assume that the rule applies to 63% of the total number of individuals who have life insurance, which is 100. Thus, 63 individuals satisfy the IF condition in the rule, which leaves us with 37 individuals who do not satisfy the IF condition. 
Therefore, the total number of individuals who have credit card insurance and are less than 30 years old is 63. Out of these 63, 70% or 44 individuals would satisfy the THEN condition and have purchased life insurance, leaving us with 19 individuals who have credit card insurance and are less than 30 years old, but have not purchased life insurance. 
Thus, the answer is 27, which represents the number of individuals who have credit card insurance, are less than 30 years old, and do not have life insurance.

Assume That We Have a Dataset Containing Information About 200