استخدام لوحة الانحدار للسيطرة في : دراسة تطبيقية على معمل سمنت بادوش

Abstract EN

The regression control chart is an effective statistical process control tool in situations where the output characteristic of interest is affected by an external covariate .

In this research , a regression control chart has been formed from data obtained from the Badush cement plant (expansion).

The data are production volume of cement (dependent variable y) which is affected by the manhours used in the plant (independent variable x) and the data were taken during the time period (2009-2010) .

For purposes of statement performance of the plant, we applied the regression control chart on data of a later time period (2011) and there was one point out of upper control limit and this means that there was a significant improvement in the level of performance and an increase in the rate of productivity, (temporarily or permanently) .As a result an investigation was made to know the reason which led to the exit point for the upper control limit and approval for the development of the plant and increase of the production.