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The formulae widely used is based on Normal distributiion curve. But, we have seen processes which are completely different in terms of distribution. In those cases, how ... See More
How is process capability (Cp, Cpk) estimated for non-normal data? First, we should discuss some general requirements for Process Capability Indices (Cp, Cpk) 1. You ... See More
Process Capability enables you evaluate non-normal process capability using: Box-Cox power Transformation Johnson Transformation system Clements Method using Pearson C ... See More
Actually you can't use Cp and Cpk on non-normal distribution. the forrmula is based on the assumption that the distribution is normal. thats why when we explain proc ... See More
SPC is a widely used quality tool throughout many industries. ... By monitoring and controlling a process, we can assure that it operates at its fullest potential. ... da ... See More