ABSTRACT
The existence of the problem of doubtful
observations has been recognized for very ong time. It is the desire to
thoroughly investigate their effects, enlighten the experimenters on how to
examine their existence and then introduce some degree of objectivity into
their treatments that prompted the selection of the title. Apart from these.
suggestions were offered as to their control. Two sets of data were employed
for the study. They include: The quarterly sales of ten coca- cola products
obtained from Port Harcourt Depot (1997-2006) and The examination results of
forty final students in fives courses obtained form the Department of
Mathematics, University of Uyo. The methods of box plot, z-score and times
series were employed for the detection of outliers. The findings have revealed
that the sales data, the Box- plot detected three lower Outliers but, no upper
Outlier. A time plot of the data indicated two different breaks in the pattern
of the observations and further confirmed the results of the BOx- plot. For the
examination results, the z- score designated as extreme outliers the 'A' and
'B' grades (upper Outliers pair) in the first course and the 'F" and 'E'
grades (lower Outlier- pair) in the fifth course. Two nonextreme Outliers ('E'
and 'B'- grades) were detected in the second course and another two ('D' and
'C'-grades) in the fourth course. The detection was based on the discrepancy
and expected frequencies. No outlier was found .n the third course - a clear
justification of the grades.
UWALEME, M (2024). Statistical Analysis Of Outliers Of Discordancy Test (Culture) In A Set Of Complex Data:- Uwaleme, Melchizedek C.. Repository.mouau.edu.ng: Retrieved Nov 23, 2024, from https://repository.mouau.edu.ng/work/view/statistical-analysis-of-outliers-of-discordancy-test-culture-in-a-set-of-complex-data-uwaleme-melchizedek-c-7-2
MELCHIZEDEK, UWALEME. "Statistical Analysis Of Outliers Of Discordancy Test (Culture) In A Set Of Complex Data:- Uwaleme, Melchizedek C." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 21 Feb. 2024, https://repository.mouau.edu.ng/work/view/statistical-analysis-of-outliers-of-discordancy-test-culture-in-a-set-of-complex-data-uwaleme-melchizedek-c-7-2. Accessed 23 Nov. 2024.
MELCHIZEDEK, UWALEME. "Statistical Analysis Of Outliers Of Discordancy Test (Culture) In A Set Of Complex Data:- Uwaleme, Melchizedek C.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 21 Feb. 2024. Web. 23 Nov. 2024. < https://repository.mouau.edu.ng/work/view/statistical-analysis-of-outliers-of-discordancy-test-culture-in-a-set-of-complex-data-uwaleme-melchizedek-c-7-2 >.
MELCHIZEDEK, UWALEME. "Statistical Analysis Of Outliers Of Discordancy Test (Culture) In A Set Of Complex Data:- Uwaleme, Melchizedek C." Repository.mouau.edu.ng (2024). Accessed 23 Nov. 2024. https://repository.mouau.edu.ng/work/view/statistical-analysis-of-outliers-of-discordancy-test-culture-in-a-set-of-complex-data-uwaleme-melchizedek-c-7-2