September 2017
Beginner to intermediate
446 pages
9h 17m
English
book
Data Analysis with IBM SPSS Statistics
by James C. Mott, Ken Stehlik-Barry, James Sugrue, Anthony Babinec
Content preview from Data Analysis with IBM SPSS Statistics
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Overview of SPSS Statistics cluster analysis procedures
SPSS Statistics offers three clustering procedures: CLUSTER, QUICK CLUSTER, and TWOSTEP CLUSTER.
CLUSTER produces hierarchical clusters of items based on distance measures of dissimilarity or similarity. The items being clustered are usually rows in the active dataset, and the distance measures are computed from the row values for the input variables. Hierarchical clustering produces a set of cluster solutions from a starting situation where each case is its own cluster of size one, to an ending situation where all cases are in one cluster. Case-to-case distance is unambiguous, but case-to-cluster and cluster-to-cluster distance can be defined in different ways, so there are multiple ...
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