BQS OBSP Determination:
4-NITROPHENOL
SCHEDULE: 1383 , TESTIDCODE: 34646GCM56
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
4-NITROPHENOL

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 56 52% 14% 55% 15%
Total 56 52% 14% 55% 15%

Sample Statistics
4-NITROPHENOL

Characteristic N % % Basis
Plotted 56 97% Spiked
Estimated Values 20 34% Spiked
Deleted Values 3 2% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 60 .  
False Negatives 2 3% 2 out of 58
Not Spiked 77 .  
False Positives 1 1% 1 out of 76