Glossary
Audience measurement
Quantifying how many people are exposed to media content and who they are, across TV, streaming, print, and digital.
Audience measurement is the discipline of quantifying how many people are exposed to a piece of media, television, streaming, radio, print, or digital, and describing who those people are.
Methods vary by medium: television and radio have historically relied on panels and set-top box data to estimate ratings and Gross Rating Points, while digital platforms can measure exposure more directly through server logs and unique visitors. Increasingly, cross-platform measurement tries to combine these sources into a single, deduplicated view of reach across screens.
Broadcasters, publishers, and advertisers rely on audience measurement to set advertising rates, evaluate reach and frequency, and negotiate distribution deals, making it foundational to the economics of media and entertainment. The main pitfalls are panel sizes too small to measure niche audiences reliably, and double-counting the same person across devices when cross-platform deduplication is imperfect.
Last reviewed September 22, 2026