Fuzzy quality and analysis on fuzzy probability

The paper puts forward the fuzzy attribute of quality and the way of a qualified handling of fuzzy quality. It brings to light the transition and consistency between clear quality and fuzzy quality and advances the concept of ''fuzzy qualification'' and puts forward its corresponding computing formula. The paper also develops the concept of ''fuzzy process capability'' and puts forward the computing formula of fuzzy process capability index, by which fuzzy process can be controlled.