Longitudinal data refers to information or measurements that are collected over a period of time from the same individuals or subjects. It enables studying how things change or develop over time in a particular group, helping to identify patterns and trends.
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- The application of statistical controls using longitudinal data systems often provide meaningful information regarding program impacts even without random assignment. (educationnext.org)
- Researchers today have the benefit of longitudinal data sets that link individual teachers and students over time. (educationnext.org)
- The authors use longitudinal data from one large school district to investigate the distribution of principals across schools. (cepa.stanford.edu)
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