trochę dziwne to "outlier" ..




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Note added at 2 hrs (2022-08-21 16:19:19 GMT)
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5.2.2 Measurement protocol

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- in either case, the combination “number of levels of contamination/number of replicates/number of non-outlier collaborators” shall be selected so that at least 480 results (240 by each method) are generated for use in the calculations for each method.

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6.2 Interlaboratory study
6.2.1 General considerations

The aim of the interlaboratory study is to compare the performance of the alternative method to the reference method by different collaborators using identical samples examined under reproducibility conditions and to compare these results with pre-set criteria for the acceptable difference between the reference method and the alternative method. Wherever possible, the study conditions should reflect the normal variation between laboratories. The interlaboratory study is organized by the organizing laboratory. The results (tables and calculations) of the different parts and the interpretation of the results, including discrepant results, shall be given in a study report.

6.2.2 Measurement protocol

The interlaboratory study shall produce at least eight valid data sets from at least eight collaborators. The collaborators shall come from a minimum of four different organizations, but preferably eight organizations excluding the organizing laboratory. A maximum of three data sets can be produced by one organization. Technicians involved in the preparation of the samples used in the interlaboratory study shall not take part in the testing of those samples within the interlaboratory study.

NOTE Laboratories in different locations, but belonging to one company or institute, are accepted as different organizations

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— The analysis of samples shall be performed in each laboratory at the stipulated date.

The organizing laboratory using all recorded data shall determine which results are suitable for use in analysing the data. The organizing laboratory shall examine the raw data and other information requested in the datasheet to ascertain that all collaborators have performed the analyses according to both the alternative and reference methods as written. When there is evidence that results might be obtained under inappropriate conditions and/or the methods have not been followed strictly, these or all results from the collaborator are excluded for further analysis. No outlier tests are performed on the selected data.

- https://www.scribd.com/document/529806909/Pdfcoffee-com-Iso-...