Exam 12: Introduction to Data Mining

U-botit.com is an electronic commerce company that sells music online.It keeps a tab of what genre of music their registered customers buy.If u-botit.com were to use the data mining approach of association, which of the following actions would it take?

________ is a data-mining technique used for classifying a set of observations into predefined classes.

Validation data sets differ from training data sets in that validation data sets ________.

Which of the following is true of cluster analysis?

Which of the following is true of hierarchical clustering?

The weights for determining the discriminant functions are determined by ________.

________ is the ratio of the number of transactions that include all items in the consequent as well as the antecedent to the number of transactions that include all items in the antecedent.

Logistic regression cannot be employed when the dependent variable is binary.

Which of the following is true of a training data set?

How are objects clustered in agglomerative hierarchical clustering?

Briefly explain classification as a data-mining tool with an example.

Which of the following types of data-mining methods provide probabilistic if-then statements?

In the average linkage clustering, the distance between two clusters is defined as the average of distances between all pairs of objects, where each pair is made up of one object from each group.