Chapter 6: Sampling Plans in Quality Engineering and Management
Abstract : A sampling plan is a method for selecting a subset of items from a population for inspection or research. It helps to ensure that the sample is representative of the population. When to use sampling plans Quality control: To determine how many items to inspect, and how to decide whether to accept or reject a lot Research: To select individuals to represent a target population Surveys: To select a sample of people to survey What to consider when creating a sampling plan Target audience: Who the survey is intended for Sample size: How many items or people to include in the sample Sampling method: How to select the sample, such as stratified, systematic, or cluster sampling Non-response bias: How to account for people who don't respond to the survey Acceptance Quality Limit (AQL): The percentage of defects that consumers are willing to accept Some types of sampling plans Single sampling A random sample from the lo...