Exam 20: Cluster Analysis

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To use cluster analysis for clustering variables to identify homogeneous groups, the researcher could do all of the following except ________.

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Why should the clustering of variables be used?

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Cluster analysis does not classify variables as dependent or independent.

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Which method of analysis does not classify variables as dependent or independent?

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Which of the following is a variance method of clustering?

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________ is a class of techniques used to classify objects or cases into relatively homogeneous groups.

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Which method allows the researcher to obtain information on cluster membership of cases if the number of clusters is specified?

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________ methods are commonly used in marketing research.

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Which method allows the researcher to obtain information on cluster membership of cases if the number of clusters is specified?

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Measuring similarity in terms of distance between pairs of objects is the most common approach used in cluster analysis for grouping similar objects together.

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________ is frequently referred to as k-means clustering.

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The centroids represent the mean values of the objects contained in the cluster on each of the variables.

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The ________ is a nonhierarchical method in which a cluster center is selected and all objects within a pre-specified threshold value from the center are grouped together.

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The ________ are the initial starting points in nonhierarchical clustering.

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Cluster analysis requires prior knowledge of the cluster or group membership for each object or case included to develop the classification rule.

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Which is best to use when selecting a clustering procedure: hierarchical or nonhierarchical clustering?

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

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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.

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In SPSS, the main program for hierarchical clustering of objects or cases is ________.

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If cluster analysis is used as a general data reduction tool, subsequent multivariate analysis can be conducted on the clusters rather than on the individual observations.

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