Question 1

It is possible to obtain information on cluster membership of cases via the icicle plot if the number of clusters is specified.

Accepted Answer

A) True 
 B)False  True

Question 2

When cluster analysis is also used for clustering variables to identify homogeneous groups,the units used for analysis are the variables and the distance measures are computed for all pairs of variables.

Accepted Answer

A) True 
 B)False  True

Question 3

In the TwoStep procedure,the euclidean measure can be used only when all of the variables are ordinal.

Accepted Answer

A) True 
 B)False  False

Question 4

Most clustering methods are relatively complex procedures that are supported by an extensive body of statistical reasoning.

Accepted Answer

A) True 
 B)False

Question 5

Why should the clustering of variables be used?

Accepted Answer

Cluster analysis is also used for cluste

Question 6

The ________ is a nonhierarchical method that specifies several cluster centers at once.All objects within a pre-specified threshold value from the center are grouped together.

Accepted Answer

A)  optimizing partitioning method 
B)  Ward's procedure 
C)  parallel threshold method 
D)  sequential threshold method 
A)  optimizing partitioning method 
B)  Ward's procedure 
C)  parallel threshold method 
D)  sequential threshold method

Question 7

The dendrogram is read from right to left.

Accepted Answer

A) True 
 B)False

Question 8

The average linkage method of hierarchical clustering is preferred to the single and complete linkage methods.

Accepted Answer

A) True 
 B)False

Question 9

________ are agglomerative methods of hierarchical clustering in which clusters are generated to minimize the within-cluster variance.

Accepted Answer

A)  Centroid methods 
B)  Variance methods 
C)  Parallel methods 
D)  Linkage methods 
A)  Centroid methods 
B)  Variance methods 
C)  Parallel methods 
D)  Linkage methods

Question 10

The primary objective of cluster analysis is to classify objects into relatively homogeneous groups.

Accepted Answer

A) True 
 B)False

Question 11

What are the steps in conducting cluster analysis (Figure 20.3 in the text)?

Accepted Answer

The steps involved in conducting cluster

Question 12

Which statement is not true about cluster analysis?

Accepted Answer

A)  Objects in each cluster tend to be similar to each other and dissimilar to objects in the other clusters. 
B)  Groups or clusters are suggested by the data,not defined a priori. 
C)  Cluster analysis is also called classification analysis or numerical taxonomy. 
D)  Cluster analysis is a technique for analyzing data when the criterion or dependent variable is categorical and the independent variables are interval in nature. 
A)  Objects in each cluster tend to be similar to each other and dissimilar to objects in the other clusters. 
B)  Groups or clusters are suggested by the data,not defined a priori. 
C)  Cluster analysis is also called classification analysis or numerical taxonomy. 
D)  Cluster analysis is a technique for analyzing data when the criterion or dependent variable is categorical and the independent variables are interval in nature.

Question 13

In SAS,the ________ program can be used for the hierarchical clustering of objects or cases.

Accepted Answer

A)  CLUSTER ANALYSIS 
B)  FASTCLUS 
C)  HIERARCHICAL CLUSTER 
D)  VARCLUS 
A)  CLUSTER ANALYSIS 
B)  FASTCLUS 
C)  HIERARCHICAL CLUSTER 
D)  VARCLUS

Question 14

________ involves examining the cluster centroids.

Accepted Answer

A)  Interpreting and profiling the clusters 
B)  Deciding on the number of clusters 
C)  Assessing reliability and validity 
D)  Selecting a clustering procedure 
A)  Interpreting and profiling the clusters 
B)  Deciding on the number of clusters 
C)  Assessing reliability and validity 
D)  Selecting a clustering procedure

Question 15

The parallel threshold method differs from the other two non-hierarchical clustering procedures in that the objects can later be reassigned to clusters to optimize an overall criterion.

Accepted Answer

A) True 
 B)False

Question 16

Nonhierarchical clustering is faster than hierarchical methods.

Accepted Answer

A) True 
 B)False

Question 17

The most important part of ________ is selecting the variables on which clustering is based.

Accepted Answer

A)  interpreting and profiling clusters 
B)  assessing the validity of clustering 
C)  selecting a clustering procedure 
D)  formulating the clustering problem 
A)  interpreting and profiling clusters 
B)  assessing the validity of clustering 
C)  selecting a clustering procedure 
D)  formulating the clustering problem

Question 18

The ________ are the initial starting points in nonhierarchical clustering.

Accepted Answer

A)  factor loadings 
B)  factor scores 
C)  cluster centers 
D)  cluster centroids 
A)  factor loadings 
B)  factor scores 
C)  cluster centers 
D)  cluster centroids

Question 19

In hierarchical clustering,the solution may depend on the order of cases in the data set.

Accepted Answer

A) True 
 B)False

Question 20

Use of different distance measures may lead to different clustering results.Hence,it is advisable to use different measures and compare the results.

Accepted Answer

A) True 
 B)False

Exam 20: Cluster Analysis

It is possible to obtain information on cluster membership of cases via the icicle plot if the number of clusters is specified.

When cluster analysis is also used for clustering variables to identify homogeneous groups,the units used for analysis are the variables and the distance measures are computed for all pairs of variables.

In the TwoStep procedure,the euclidean measure can be used only when all of the variables are ordinal.

Most clustering methods are relatively complex procedures that are supported by an extensive body of statistical reasoning.

Why should the clustering of variables be used?

The ________ is a nonhierarchical method that specifies several cluster centers at once.All objects within a pre-specified threshold value from the center are grouped together.

The dendrogram is read from right to left.

The average linkage method of hierarchical clustering is preferred to the single and complete linkage methods.

________ are agglomerative methods of hierarchical clustering in which clusters are generated to minimize the within-cluster variance.

The primary objective of cluster analysis is to classify objects into relatively homogeneous groups.

What are the steps in conducting cluster analysis (Figure 20.3 in the text)?

Which statement is not true about cluster analysis?

In SAS,the ________ program can be used for the hierarchical clustering of objects or cases.

________ involves examining the cluster centroids.

The parallel threshold method differs from the other two non-hierarchical clustering procedures in that the objects can later be reassigned to clusters to optimize an overall criterion.

Nonhierarchical clustering is faster than hierarchical methods.

The most important part of ________ is selecting the variables on which clustering is based.

The ________ are the initial starting points in nonhierarchical clustering.

In hierarchical clustering,the solution may depend on the order of cases in the data set.

Use of different distance measures may lead to different clustering results.Hence,it is advisable to use different measures and compare the results.

Introduction to Marketing Research

Defining the Marketing Research Problem and Developing an Approach

Research Design

Exploratory Research Design: Secondary Data

Exploratory Research Design: Qualitative Research

Descriptive Research Design: Survey and Observation

Casual Research Design: Experimentation

Measurement and Scaling: Fundamentals and Comparative Scaling

Measurement and Scaling: Non Comparative Scaling Techniques

Questionnaire and Form Design

Sampling: Design and Procedures

Sampling: Final and Initial Sample Size Determination

Fieldwork

Data Preparation

Frequency Distribution, cross-Tabulation, and Hypothesis Testing

Analysis of Variance and Covariance

Correlation and Regression

Discriminant and Logit Analysis

Factor Analysis

Multidimensional Scaling and Conjoint Analysis

Structural Equation Modeling and Path Analysis

Report Preparation and Presentation

International Marketing Research

Filters