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RE-SCALED SUM SCORES [1 record]

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Record 1 1994-01-05

English

Subject field(s)
  • Statistical Methods
CONT

Combining z-scores and Acceptability Criteria for Lab Performance ((in the analysis of pesticides)) Individual z-scores for each lab will be combined within each round in order to produce a Re-scaled Sum of Scores (RSZ) and a Squared Sum of z-Scores (SSZ), which are both indicators of the overall lab performance. The RSZ and SSZ are complementary scores and both must be acceptable for a laboratory to pass a round of proficiency samples. The RSZ is interpreted using the same scale as for the individual z-scores. The SSZ has a chi-squared distribution and will be interpreted using a chi-squared distribution table at the 95 % confidence limit with n-1 degrees of freedom.

French

Domaine(s)
  • Méthodes statistiques
OBS

Équivalent proposé par Michel Charuest, traducteur à la Direction des services de traduction centralisés - Bureau de Montréal.

Spanish

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