AOAC SPIFAN WPC ERP-Final Action Review (Nov. 2017)
2016.15 (Nov. 2017) - WPC-31 MLT-Final Action Review
FOR ERP USE ONLY DO NOT DISTRIBUTE
Table 2016.15F. Statistical analysis of data for the two practice samples (15 laboratories, 5 models of instrument)
Statistical Parameters
Practice SX1
Practice SX2
Total number of laboratories Total number of replicates
p
p
15 29
15 29
Sum(n(L)) XBARBA R
Sum(n(L)) XBARBA R
Overall mean of all data (grand mean)
41.72
60.08
Largest average lab result Smallest average lab result
Max Min
Max Min
44.87 39.45
61.98 58.09
Repeatability standard deviation Reproducibility standard deviation Repeatability relative standard deviation
s(r)
s(r)
0.43 1.63 1.04 3.92 2.28 1.72
0.49 1.20 0.81 2.01 2.16 0.93
s(R)
s(R)
RSD(r)
RSD(r) RSD(R) % RSDH
Reproducibility relative standard deviation RSD(R)
Horwitz RSD HORRAT value
% RSDH
HorRat
HorRat
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