When Pa is plotted as a function of p, we obtain an operating-characteristic curve for a continuous-
sampling plan. Note that whereas an OC curve for a lot-by-lot acceptance-sampling
plan gives the percentage of lots that would be passed under sampling inspection, the OC
curve for a continuous-sampling plan gives the percentage of units passed under sampling
inspection. Graphs of operating-characteristic curves for several values of f and i for CSP-1
plans are shown in Fig. 16.8. Note that for moderate-to-small values of f, i has much more
effect on the shape of the curve than does f.