Paper #791

Títol:

Subset correspondence analysis: Visualizing relationships among a selected set of response categories from a questionnaire survey

Autors:

Michael Greenacre i Rafael Pardo

Data:

Novembre 2004

Resum:

It is shown how correspondence analysis may be applied to a subset of response categories from a questionnaire survey, for example the subset of undecided responses or the subset of responses for a particular category. The idea is to maintain the original relative frequencies of the categories and not re-express them relative to totals within the subset, as would normally be done in a regular correspondence analysis of the subset. Furthermore, the masses and chi-square metric assigned to the data subset are the same as those in the correspondence analysis of the whole data set. This variant of the method, called Subset Correspondence Analysis, is illustrated on data from the ISSP survey on Family and Changing Gender Roles.

Paraules clau:

Categorical data, correspondence analysis, questionnaire survey

Codis JEL:

C19, C88

Àrea de Recerca:

Estadística, Econometria i Mètodes Quantitatius

Publicat a:

Sociological Methods and Research, 2006, 35, 193-218

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