Fig. 4.

Cumulative number of failures versus misalignment norm for two representative samples from Example 2. The step function in black indicates the data, the simple linear logistic model fit is in red, and the nonparametric logistic regression fit is in blue. Plots correspond to sample 1 (left) and 8 (right). Improvement in the quality of fit relative to the linear logistic model fit was concluded based on the visual analysis and ROC quantitative assessment.