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A practical overview of in-line inspection performance validation statistics through simulation

The goal of this paper is to help the reader develop a better intuitive feel for the practical meaning of performance validation statistics and associated terminology through the use of numerical simulations and visualizations. To demystify statistical language and explain the relationship between what is observed in a small sample from a dig campaign and what can be stated about the broader population of reported anomalies, this paper presents hypothetical ILI results, simulated potential field dig campaigns, and visualization of the resulting performance statistics. The meaning of certainty and confidence are specifically addressed.