Numéro de référence
ISO 3301:1975
ISO 3301:1975
© ISO 2024
Norme internationale
ISO 3301:1975
Interprétation statistique des données — Comparaison de deux moyennes dans le cas d'observations appariées
Edition 1
1975-08
1975-08
ISO 3301:1975
8540
Publiée
(Edition 1, 1975)
Cette publication a été révisée et confirmée pour la dernière fois en 2021.
Cette édition reste donc d’actualité.
Résumé
A method is specified for comparing the mean of a population of differences with zero or any other preassigned value. It may be applied to establish a difference between two treatments, where "treatment" should be understood in a wide sense, e.g. as a test method, measuring instrument or laboratory involved, and is applicable under the conditions that the series of differences can be considered as a series of independent random items and the distribution of the differences is normal or approximately normal. If the distribution deviates from the normal, it remains valid provided the sample size is sufficiently large (100 and more).