The study of a population over time, as opposed to cross‐sectional analysis which is limited to a single point in time. Time‐series analysis and panel studies are both examples. In general, panel surveys use individual‐level data and time‐series analysis uses aggregate‐level data (see ecological association). However, the chief difference is that panel studies have a relatively large number of units studied over a small number of time points (maybe just two), whilst time‐series data have a small number of units (maybe just one) and a large number of time points.
Subjects: Social Sciences.