An operating characteristics curve shows:
A) upper and lower product specifications.
B) product quality under different manufacturing conditions.
C) how the probability of accepting a lot varies with the population percent defective.
D) when product specifications don't match process control limits.
E) how operations affect certain characteristics of a product.

Question

Quizplus · Accepted Answer

An operating characteristics curve (OC curve) is a graphical depiction of the relationship between the probability of accepting a lot (y-axis) and the population percent defective (x-axis). It is a statistical tool that helps determine the sampling plan for a given production process in order to maintain the desired level of product quality. The curve is generated by plotting the probability of acceptance for different sample sizes and varying percentages of defectives in the population. By analyzing the curve, one can determine the optimal sample size and acceptance/rejection criteria for a given level of quality assurance. Upper and lower product specifications, product quality under different manufacturing conditions, and how operations affect certain characteristics of a product are unrelated to the concept of an OC curve. Additionally, although an OC curve could potentially show when product specifications don't match process control limits, this is not its primary purpose.

An Operating Characteristics Curve Shows