Exact(3)
Specifically, the engineered strains accurately predicted toxicity shifts in all the treatment compartments under study (with phenolic concentrations ranging from approximately 10 to 600 mg l−1) with a low coefficient of variation of replicate determinations (between 1.16% and 8.32%).
The average coefficient of variation of replicate determinations was 2.5%.
The lowest limit of detection for the assay was defined by Myriad RBM as the lowest concentration of an analyte in a sample at which the coefficient of variation of replicate standard samples was 30%.
Similar(57)
Precision within laboratories was assessed by determining the coefficient of variation of replicates.
Precision was determined by calculating the coefficient of variation of replicates within each batch.
Measurements errors in gene expression microarrays are studied by the MicroArray Quality Control (MAQC) project, a large-scale study led by FDA scientists involving 137 participants from 51 organizations, where they showed that the median coefficient of variation of replicates is between 5% and 15% [ 5].
The coefficients of variation of replicate analysis were determined for precision of analysis; the variations were found to be less than 10%.
The coefficients of variation of replicating the examination were analyzed in various determinations for testing the exactness of the investigation and variation below 10% were considered as correct.
The limit of reporting was 0.05 μg/g for Cu, Zn, Se, As, and Pb, and 0.01 μg/g for Cd and Hg; the coefficient of variation of 10 replicates of pooled C. mydas egg collected from Heron Island in 1998 ranged from 0.5 to 1.9%.
Concordance between laboratories was assessed by determining the average coefficient of variation of the mean replicate values for each sample.
Analysis of the coefficients of variation of biological replicate hybridisations confirmed homogenous RNA preparations of sufficient quality for microarray experiments (Electronic supplementary material [ESM] Fig. 1).
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