A statistical methodology employed in quality control utilizes acceptance sampling to evaluate batches of products. This specific methodology, often accessed in a portable document format, mandates that a batch be accepted only if zero defects are found in the sample inspected. It presents tabulated values that dictate the sample size needed for varying lot sizes, based on the acceptable quality level desired.
The significance of employing such a stringent criterion lies in its ability to minimize the risk of accepting lots with even a small proportion of defective items. This is particularly beneficial in situations where the cost of a defective item reaching the customer is exceptionally high, or where product safety is paramount. Historically, such plans were developed to provide a cost-effective alternative to 100% inspection, especially in mass production environments.