Road Traffic Offences in Nigeria: An Empirical Analysis using Buys-Ballot Approach
K. C. N. Dozie *
Department of Statistics, Imo State University Owerri, Imo State, Nigeria.
C.C Ibebuogu
Department of Computer Science, Imo State University Owerri, Imo State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Road traffic offences in time series analysis when trend-cycle component is quadratic is discussed in this study. The study is to investigate the variance stability, trend pattern, seasonal indices and suitable model for decomposition of study data. The study shows that, the series is seasonal with evidence of upward trend or downward trend. There is an upsurge of the series in the months of March, August and November and a drop in January, June and December. The periodic standard deviations are stable while the seasonal standard deviations differ, suggesting that the series requires transformation to make the seasonal indices additive.
Keywords: Decomposition model, buys-ballot table, successful transformation, seasonal mean, standard deviation, suitable model