Statistical Quality Control On Kit X Soap (A Case Study Of J. Udeagbala Holdings Nigeria Limited Aba)

ABSTRACT

Surely, there is no production which is so good that batches of products made at the same time and at different tine will be alike. As such, variations are inevitable. These variations in the products could be traced to random (chance) causes and assignable causes. Hence producers are faced with the challenges of controlling these variations during production. This study is aimed at construction of control charts to check and control the quality characteristics of Kit X soap which will lead to improvement of the product. The data for this work is a secondary data. The assumptions underlying the construction of control chart were tested for. These assumptions include normality, constant variance and randomness. Chi Square test for normality was used for normality while median test and Bartlett test were used to test for randomness and constant variance respectively. In justification of assumptions, it was discovered that data for the entire quality characteristic were not normally distributed. Test showed that the data were randomly distributed and has a constant variance. Using the Statistical Quality Control Technique, the process variably and process average were checked using R chart and X bar chart respectively. On the average it was discovered that the company is operating under control.