Empirical distribution function as a tool in quality control

Abstract

In this paper, we are introducing two new methods for Quality Control. Those methods rely on using the Empirical distribution function of a given sample (or several samples). The first method we use for one sample, i.e. we can determine if each given sample is adequate. We use the second method to determine whether several samples are "in control" or not. For the sample to be "in control" state, the normal distribution is required.