Statistical Glossary
Panel Data:
A panel data set refers contains observations on a number of units (e.g. subjects, objects) over time. Thus, panel data has characteristics of both longitudinal data and cross-sectional data .
A simple example of panel data is the values of the gross annual income for each of 1000 randomly chosen households in New York City collected for each of 10 years from 1991 to 2000. Such data can be represented as a set of double-indexed values {Vij; i=1,...,10, j=1,...,1000} .
See also: cross-sectional data , longitudinal data , Cross-sectional, longitudinal, and panel data (example)