BQS OBSP Determination:
CHLORPYRIFOS, OXYGEN ANALOG
SCHEDULE: 2033 , TESTIDCODE: 61636GCM39
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
CHLORPYRIFOS, OXYGEN ANALOG

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 8 53% 25% 50% 24%
>= Reporting Level 31 27% 18% 22% 11%
Total 39 32% 22% 24% 19%

Sample Statistics
CHLORPYRIFOS, OXYGEN ANALOG

Characteristic N % % Basis
Plotted 39 64% Spiked
Estimated Values 39 64% Spiked
Deleted Values 3 2% Spiked + Not Spiked
Spiked, Censored 4 7% Spiked
Spiked 61 .  
False Negatives 18 30% 18 out of 61
Not Spiked 121 .  
False Positives 0 0% 0 out of 118