Comparing The Effectiveness of a90/95 Calculations (Preprint)
STATISTICAL ENGINEERING PALM BEACH GARDENS FL
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Most practitioners see a9095 as a static, single-point summary of an entire inspections capability. It purports to be the size of the target having at least 90 probability of detection in 95 of 100 probability of detection POD experiments under nominally identical conditions. But in some situations the actual coverage is closer to 80, rather than 95, with 50 coverage being the median PODa curve itself. This paper discusses the two philosophies, the Wald Method, and the Loglikelihood Ratio Method, for constructing lower bounds on PODa curves and therefore determining a9095 and compares the effectiveness of each as functions of other experimental realities such as sample size and balance.
- Statistics and Probability
- Test Facilities, Equipment and Methods