Journal of Agriculture & Life Sciences

A Study on Exponentially Weighted Moving Average Control Chart with Parametric and Nonparametric Approach
Duttadeka, S; Gogoi, B

Abstract
In this paper, a comparative study of performance of some parametric and nonparametric EWMA control charts for detecting the process mean shift is considered. In section 2, we briefly describe each of the various EWMA models that are taken into account in our present study, Viz. the Parametric X -EWMA and Nonparametric Grouped Signed Rank (GSR)-EWMA, for the purpose of comparative study. In Section 3, comparisons of both the procedure are elaborately described. For this, we are using the simulation technique to find out the Average Run Length (ARL) of various EWMA control charts. Results are shown in various tables. Graphs are drawn for easy visual comparison and accordingly, discussions and conclusions are made.

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