Acceptance Sampling for Variables
The module helps to decide whether a quantitative characteristics of a material (e.g. size, purity, strength, mass, humidity) satisfies given requirements. Acceptance sampling for variables is useful even for materials, for which no individual pieces can be distinguished (e.g. fluid or gaseous materials). In such cases, a sample of appropriate size from the whole batch is taken. The sample is subsequently analyzed (measured). Size of an individual sample is related to the measurement method and its properties. Sampling has to be done in a random way, keeping in mind that each part of a sampled batch has to have the same probability of becoming a part of a sample.

PDF Acceptance Sampling for Variables - Pdf manual

Example Analysis:
Data:
cNO3 A cNO3 B cNO3 C cNO3 D
54.01 56.01 56.76 56.76
55.15 53.82 57.28 57.28
55.63 56.91 58.41 58.41
56.51 56.17 58.55 58.55
56.08 55.84 57.56 57.56
... ... ... ...

Acceptance Sampling for Variables

Protocol Text Output:
Acceptance Sampling by Variables    
       
Task name : Variable Sampling    
       
QL = 53    
QU = 60    
AQL = 0.05    
RQL = 0.2    
Alpha = 0.1    
Beta = 0.2    
       
Column Mean : Target Std. deviation (S) : Conclusion
cNO3 A 55.27192308 1.042286023 Conforming
cNO3 B 54.5625 1.939126316 Non-conforming
cNO3 C 57.78875 0.721178459 Conforming
cNO3 D 56.59615385 2.0700301 Conforming

Graphical Output:
Acceptance Sampling for Variables
1 out of 4 samples rejected