Missing Value Estimation in a Nested-Factorial Design with Three Factors

When faced with unbalanced data, it is often necessary to estimate the necessary missingvalues before the application of the analysis of variance technique. Previous studies have shownthat dierent designs require dierent missing value estimators. With the introduction of somerelatively new statistical designs, it has become expedient to derive missing value estimatorsfor such designs. In this study, least squares estimators of missing values in a three-factornested-factorial design are derived. Properties of the estimators are equally determined. Anumerical example is given to show the application of the theoretical results obtained in thispaper. Our empirical results establish the appropriateness of the missing value estimationmethod presented in this study

Analysis of Traffic Flow at Signalized Junctions in Uyo Metropolis

Traffic flows at three signalized junctions in Uyo metropolis were considered and the data used for the analysis were collected during peak periods (morning and evening) for three consecutive days. The performance measures of congestion such as the average queue length, arrival and saturation flow rates as well as the average waiting time of vehicle per cycle have been calculated for a better understanding of the traffic situation in the city by motorists and proper vehicular logistics. With the random nature in which vehicles arrive and depart, we assumed a Poisson arrival process and deterministic (constant) service time with the service rate $\mu=1/s$ which incorporate both the stochastic and deterministic components of delay estimation. Using the concept of the Canadian delay model in Hellinga and Liping (2001), we obtained the overall delay given an observation interval. An estimate of the mean overall delay which is the average time a vehicle could be delayed at any signalized junction in Uyo metropolis is approximately 63s

THE EFFECT OF JOB TENURE ON EMPLOYEE/CUSTOMER RELATIONSHIP IN THE NIGERIAN BANKING INDUSTRY

Despite the fact that the banking industry is unrivalled in the development of any economy because it marshals funds from the surplus spending unit of the economy and makes the same available to the deficit units for the attainment of the economy's development goals, it is observed that the banking staff, who are agents or bedrock for the fulfilment of this goal, appears to be found lamenting over poor service delivery to her customers. The purpose of this study is to assess the influence of job tenure on employee/customer relationship in Nigerian banking industry. Survey research design was adopted for the study. The sample size was 333 employees selected from commercial banks in the study area through stratified random sampling technique. Questionnaire was used as instrument for data collection. Results of the analysis using one-way analysis of variance (ANOVA) test statistical techniques shows that, there is a positive significant influence of job tenure on employee/customer relationship in Nigerian banking industry. That is, there is a significant influence of organizational demography in terms of job tenure on performance in terms of employee/customer relationship in Nigeria banking industry. Based on the findings, the study recommended that, banks should encourage employees to stay on the job through motivation and incentives. This will enable them have relevant experience on the job and hence contribute to the growth and the achievement of the overall objectives of the banking sector. To this end, human resource administrators ought to be worried about characteristics and foundation of staff that best suit work position