ISO 13909-8:2016
Hard coal and coke - Mechanical sampling - Part 8 : methods of testing for bias
ISO 13909-8:2016 sets out principles and procedures for testing the bias of test samples of hard coals or cokes, taken in accordance with ISO 13909: 2016 (all parts). NOTE In the text, the term "fuel" is used where both coal and coke would be applicable in the context and either "coal" or "coke" where only one is applicable.
ISO 13909-8:2016 sets out principles and procedures for testing the bias of test samples of hard coals or cokes, taken in accordance with ISO 13909: 2016 (all parts).
NOTE In the text, the term "fuel" is used where both coal and coke would be applicable in the context and either "coal" or "coke" where only one is applicable.
<p>L'ISO 13909-8:2001 définit des principes et des modes opératoires pour la détection du biais sur des échantillons pour essai de houilles ou de cokes, prélevés conformément aux autres parties de l'ISO 13909. Seule est abordée l'utilisation de méthodes statistiques unidimensionnelles.</p> <p>L'utilisateur est averti que le risque de conclure de manière erronée à l'existence d'un biais, alors qu'aucun biais n'existe pour l'une quelconque des diverses variables mesurées sur le même ensemble d'échantillons, est sensiblement plus important que pour une seule variable. Bien que plusieurs variables puissent être mesurées, la variable unique sur laquelle porteront les résultats de l'essai doit être désignée à l'avance.</p>
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