What's the difference between microdata and macrodata ...?
Data are collected in many different forms, resulting in different kinds of files. If you're interested in census data, for example, you have a choice of using macrodata or microdata. Macrodata consist of 'headcounts', e.g. the number of people, by age group, sex, and income level, living in a specific geographic area. Microdata files, on the other hand, contain data on individuals, e.g. the Individuals microdata file for the 1991 Census of Canada contains the coded reponses of a sample of individual Canadians to the Census questionnaire.

Below are some data terms you're likely to encounter. (Links are to the Glossary of Selected Computing and Social Science Terms maintained by Jim Jacobs at the University of California, San Diego.):


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