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Médiamétrie, architect of trust

Published on 03.03.2026

English Citation Yannick Carriou Plaquette instit

EN Plaquette institutionnelle

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Results & Studies

Press release

Television audience in February 2026

02.03.2026

News

Press release

Médiamétrie creates MediaReach – unified measurement of Cross Media Video advertising campaigns

25.02.2026

Innovations

Des innovations saluées par le marché en France et en Europe

10.10.2019

Expertises

L'essentiel de la mesure d'audience de la radio

01.12.2025

Solutions

EAR - Etude Audience Radio

16.11.2021

Confidence interval calculus

Sample size or target in the sample

n =

Proportion observed in the sample or on a target in the sample

p =

Warning: only applies to a proportion. The Average Rate is an average of proportions and the Audience Share a ratio of proportions. This tool is provided for information purposes. It cannot be applied for professional purposes without further precautions.

Test of significance of the differences between two proportions

Used to assess whether the difference between 2 proportions is significant at the 95% threshold

Proportion

Sample size

1st sample

2nd sample

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