Confidence intervals of warning scores.

Widths of confidence intervals (CIs) of warning scores in simulation experiment for two choices of total number of random cylinders drew (N = 106 and N = 5×105, solid and dashed lines, respectively) and two choices of cylinders’ volume (V1 and V2 = V1×1.4, blue and grey lines, respectively). The warning scores are proportions of flagged cylinders and appropriate CIs are Wilson’s for binomial proportions. Increasing N or increasing the volumes, the numbers at numerator and denominator of the proportion increase and the confidence in its estimate improves. (TIF)