Chapter 4: Descriptive Data Mining

A tree diagram used to illustrate the sequence of nested clusters produced by hierarchical clustering is known as a _______. A. Dendrogram B. Scatter Chart C. Decision Tree D. Box-Plot

A. Dendrogram

_____ is a category of data-mining techniques that detect patterns and relationships in data. A. Descriptive Data Mining B. Predictive Data-Mining C. Matching Learning D. Artificial Intelligence

A. Descriptive Data Mining

Jaccard's Coefficient is different from the matching Coefficient in that the former: A. Measures overlap while the latter measures dissimilarity B. Does not count matching zero entries while the latter does C. Deals with categorical variable while the latter deals with continuous variables. D. Is affected by the scale used to measure variables while the latter is not

B. Does not count matching zero entries while the latter does

The simplest measure of similarity between observations consisting solely of categorical variables is given by _____. A. The Euclidean Distance B. The Standardized Euclidean Distance C. Matching Coefficient D. Jaccards Coefficient

C. Matching Coefficient