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.
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ASIEGBU, I (2021). Statistical Quality Control On Kit X Soap (A Case Study Of J. Udeagbala Holdings Nigeria Limited Aba) . Repository.mouau.edu.ng: Retrieved May 05, 2024, from https://repository.mouau.edu.ng/work/view/statistical-quality-control-on-kit-x-soap-a-case-study-of-j-udeagbala-holdings-nigeria-limited-aba-7-2
IFEANYI, ASIEGBU. "Statistical Quality Control On Kit X Soap (A Case Study Of J. Udeagbala Holdings Nigeria Limited Aba) " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 22 Jul. 2021, https://repository.mouau.edu.ng/work/view/statistical-quality-control-on-kit-x-soap-a-case-study-of-j-udeagbala-holdings-nigeria-limited-aba-7-2. Accessed 05 May. 2024.
IFEANYI, ASIEGBU. "Statistical Quality Control On Kit X Soap (A Case Study Of J. Udeagbala Holdings Nigeria Limited Aba) ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 22 Jul. 2021. Web. 05 May. 2024. < https://repository.mouau.edu.ng/work/view/statistical-quality-control-on-kit-x-soap-a-case-study-of-j-udeagbala-holdings-nigeria-limited-aba-7-2 >.
IFEANYI, ASIEGBU. "Statistical Quality Control On Kit X Soap (A Case Study Of J. Udeagbala Holdings Nigeria Limited Aba) " Repository.mouau.edu.ng (2021). Accessed 05 May. 2024. https://repository.mouau.edu.ng/work/view/statistical-quality-control-on-kit-x-soap-a-case-study-of-j-udeagbala-holdings-nigeria-limited-aba-7-2