Statistical Analysis of Pattern on Monthly Reported Road Accidents in Nigeria
Science Journal of Applied Mathematics and Statistics
Volume 4, Issue 4, August 2016, Pages: 119-128
Received: Jun. 7, 2016; Accepted: Jun. 15, 2016; Published: Jun. 28, 2016
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Authors
Oyenuga Iyabode Favour, Department of Mathematics and Statistics, The Polytechnic, Ibadan, Oyo State, Nigeria
Ayoola Femi Joshua, Department of Statistics, University of Ibadan, Ibadan, Oyo State, Nigeria
Shittu Olanrewaju Ismail, Department of Statistics, University of Ibadan, Ibadan, Oyo State, Nigeria
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Abstract
Road accidents in Nigeria have always been in the increase. Efforts made by Federal Road Safety Commission (FRSC) in tackling the menace have not yielded much result. This paper aims to find a suitable time series model to forecast the future characteristics of the road accident data on Oyo-Ibadan express road. The data used for this paper was monthly data collected for a period of Eleven years between 2004-2014. In achieving this, the additive model approach was adopted in the analysis. It includes the estimation of trend, seasonal variation and random variation using moving average method. Autoregressive Moving average model were also fitted to the data and the best order was choosing using Akaike Information Criteria (AIC). The order = c (1, 1, 2), seasonal = c (1, 1, 2)) gives the best description of the data with minimum (AIC). A forecast based on the model obtained was made by the use of m-step predictor. The time plot plotted shows that the graphs maintain a constant movement from 2004-2008 but increases abnormally in 2010 and later drop again maintaining appreciable downward movement as the year progresses. Judging from the result, accidents and deaths are higher during the festive period months because of the various festivities lined up during this period, which involve much more traveling than usual.
Keywords
Autoregressive Moving Average, Akaike Information Criteria (AIC), Road Accident, Trend
To cite this article
Oyenuga Iyabode Favour, Ayoola Femi Joshua, Shittu Olanrewaju Ismail, Statistical Analysis of Pattern on Monthly Reported Road Accidents in Nigeria, Science Journal of Applied Mathematics and Statistics. Vol. 4, No. 4, 2016, pp. 119-128. doi: 10.11648/j.sjams.20160404.11
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Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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