intervention analysis

Intervention analysis is a statistical method used to detect and measure the impact of a specific event or change—called an intervention—on a data series over time. For example, it can identify how a new policy, marketing campaign, or environmental change affects sales, health statistics, or other trends. By analyzing historical data before and after the intervention, this method helps determine whether observed changes are likely due to the event or just natural variation, enabling clearer understanding of the intervention's effectiveness.