LIS 57 Study Summary

These tables summarize the measurements reported to the QA-SAC for the 57th Laboratory Intercomparison Study. A total of 77 laboratories reported measurements. Some measurements were missing or below the analytical detection limit (DL). N designates the number of reported values above the DL. At the center of each set of N measurements is the Median, which is the accepted target value of the set. Non-parametric Sigmas were estimated from the interquartile ranges and were used to calculate Z-scores. Good, Satisfactory, and Marginal categories are defined under the Ring Diagrams tab, where there is a table that lists the Data Quality Objectives.

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Last update: March 30, 2018, 10:28 am