BQS OBSP Determination:
2,4-D METHYL ESTER
SCHEDULE: 2060 , TESTIDCODE: 50470LCM29
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
2,4-D METHYL ESTER

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 9 84% 17% 78% 10%
>= Reporting Level 59 90% 30% 86% 15%
Total 68 89% 28% 86% 14%

Sample Statistics
2,4-D METHYL ESTER

Characteristic N % % Basis
Plotted 68 96% Spiked
Estimated Values 63 89% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 1 1% Spiked
Spiked 71 .  
False Negatives 2 3% 2 out of 71
Not Spiked 97 .  
False Positives 2 2% 2 out of 97