| HCA/CCPROX(DOS) - Hierarchical Cluster Analysis |
| (DOS version for dichotomously or polytomously scored data; see DIMPACK for a Windows version for use with dichotomously scored data.)
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HCA/CCPROX performs a latent multidimensionality-sensitive
hierarchical cluster analysis on either dichotomous or polytomous
scored items. This nonparametric procedure is able to quickly
cluster the items into progressively larger and larger relatively
dimensionally homogeneous groups. It allows the user to examine
the tests dimensionality at a variety of agglomoration
levels, ranging from which pairs of items are most closely
dimensionally related, to which two item clusters best
dimensionally summarize the entire test. If the items of a test
exist in approximately dimensionally homogeneous item clusters,
then there should exist a level in the hierarchy at which the
clusters found by HCA/CCPROX will maximally agree with this
approximate simple structure. Even if approximate simple
structure does not hold, HCA/CCPROX will tend to find
dimensionally disparate clusters, and hence its uses are not
limited to tests demonstrating approximate simple structure.
HCA/CCPROX is useful in tandem with a DIMTEST
assessment of dimensionality, because it can test hypotheses
concerning HCA/CCPROX selected clusters.
System Requirements
This software is a DOS based program, which will run in the Windows environment, unless specific exceptions are noted. If you experience difficulty opening this software, please refer to the following support page on the Microsoft website:
Microsoft Support Article ID# 324767 - "Error message when you install or start an MS-DOS or 16-bit Windows-based program"
If you are unable to get this software to run on your machine, or if you have questions before purchasing the program, please contact our technical support department.
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Order Options and Details
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Dichotomous/Polytomous Software Package
This package contains: DIMPACK (Windows) + POLY-DIMTEST (DOS) + HCA/CCPROX (DOS)