BQS OBSP Determination:
CHLORPHENIRAMINE
METHOD: 2440 , TESTIDCODE: 67497LCM56
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
CHLORPHENIRAMINE

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 20 42% 13% 40% 12%
Total 20 42% 13% 40% 12%

Sample Statistics
CHLORPHENIRAMINE

Characteristic N % % Basis
Plotted 20 65% Spiked
Estimated Values 6 19% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 31 .  
False Negatives 11 35% 11 out of 31
Not Spiked 21 .  
False Positives 0 0% 0 out of 21