A student newspaper conducted a survey of student opinions about the Vietnam
War in May 1967. Responses were classified by sex, year in the program and one
of four opinions. The survey was voluntary. The data may be found in the dataset
uncviet.
(a) Conduct an analysis of the patterns of dependence in the data assuming that all
variables are nominal.
(b) Assign scores to the year and opinion and fit an appropriate model. Interpret
the trends in opinion over the years. Check the sensitivity of your conclusions
to the assignment of the scores.
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