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Example
33
Ordered-Categorical Data
Introduction
This example shows how to fit a factor analysis model to ordered-categorical data. It
also shows how to find the posterior predictive distribution for the numeric variable
that underlies a categorical response and how to impute a numeric value for a
categorical response.
About the Data
This example uses data on attitudes toward environment issues obtained from a
questionnaire administered to 1,017 respondents in the Netherlands. The data come
from the European Values Study Group (see the bibliography for a citation). The data
file environment-nl-string.sav contains responses to six questionnaire items with
categorical responses strongly disagree (SD), disagree (D), agree (A), and strongly
agree (SA).