Acceptance Sampling : VVPAT
The VVPAT-based audit of Electronic Voting Machines (EVMs) is a typical case of “lot acceptance sampling”, a statistical quality control technique widely used in industry and trade.
- Acceptance Sampling is a statistical measure used in quality control.It allows a company to determine the quality of a batch of products by selecting a specified number for testing.
- It tests a representative sampleof the product for defects. The quality of this designated sample will be viewed as the quality level for the entire group of products.
- The process involves first, determining the size of a product lot to be tested, then the number of products to be sampled and finally the number of defects acceptable within the sample batch.
- Products are chosen at random for sampling. It does not assure the quality of the complete set of products from which the sample is derived.
- Acceptance sampling in its modern industrial form dates from the early 1940s.
- It was popularized by Dodge and Romig and originally applied by the U.S. military to the testing of bullets during World War II.
