What is a Secondary Data Set?
What is a Secondary Data Set?
This chapter explains the differences between primary and secondary data sets. It explains how secondary data sets are typically collected, the ability of large institutions to collect both sizable and representative data sets and their ability to use sophisticated sampling designs in their data collection, how these large data sets can utilize statistical techniques that may not be available to smaller data sets, and differences between cross-sectional and longitudinal data sets.
Keywords: secondary data, cross-sectional data, longitudinal data, representative data sets, sophisticated sampling
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