A0810
Title: Comparing product quality using a distribution-wise index
Authors: Tsai-Yu Lin - Feng Chia University (Taiwan) [presenting]
Abstract: During the production process, producers often find it necessary to compare quality characteristic means to confirm and verify whether their improvement processes are effective. However, these methods probably ignore the individual variations between the samples. The concept of distribution-wise comparison criterion (DCC) is proposed instead of the traditional approach. The procedures of DCC for specific distributions are illustrated based on the conformance proportion in two examples. For given the reference group of the conformance proportion, the specification limits are calculated, then use these specification limits to compute the conformance proportion of the test group and then estimate a confidence lower bound for the conformance proportion of the test group by using the concept of fiducial generalized pivotal quantity. The proposed procedure has proven useful through detailed simulation results.
