Browsing Department of Mathematics & Statistics by Author "Nkansah, Bismark Kwao"

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Empirical similarity-based approach for selection of unit root test

Intsiful, Jude Kwesi Gyan; Nkansah, Bismark Kwao; Mensah, David Kwamena; Kwamena, David (University of Cape Coast, 2008)

The existence of unit roots in time series processes can impair the choice of techniques for analysis and forecasting time series data. It is of much importance in econometric modelling to determine the integration number ...
On the detection of influential outliers in linear regression analysis

Zakaria, Arimiyaw; Howard, Nathaniel Kwamina; Nkansah, Bismark Kwao (University of Cape Coast, 2014-07-30)

In this paper, we propose a measure for detecting influential outliers in linear regression analysis. The performance of the proposed method, called the Coefficient of Determination Ratio (CDR), is then compared with some ...

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