Practical Applications of Data Mining

146 Chapter 4 StatiStiCS for Data Mining

base through statistical analyses. Such information can be useful for strategic

decision-making. The variables are the attributes of the database, and the house

number used as the index is selected as the primary key.

4.3 condItIonal ProbabIlIty

Conditional probability is one of the basic concepts in probability theory.

It generally refers to the interdependence between events. Let A and B be

two events. The conditional probability of event A occurring given the

occurrence of event B is represented as the probability that events A and B

simultaneously occur divided by the probability of ...