BQS OBSP Determination:
4-METHYL-2-PENTANONE
METHOD: 2021 , TESTIDCODE: 78133GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
4-METHYL-2-PENTANONE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 9 104% 34% 105% 40%
>= Reporting Level 134 99% 13% 98% 13%
Total 143 99% 15% 98% 13%

Sample Statistics
4-METHYL-2-PENTANONE

Characteristic N % % Basis
Plotted 143 93% Spiked
Estimated Values 57 37% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 9 6% Spiked
Spiked 165 .  
False Negatives 2 1% 2 out of 154
Not Spiked 343 .  
False Positives 0 0% 0 out of 321