Box and Hunter [1] introduced the concept of rotatability for response surface designs. The concept of slope-rotatability was introduced by Hader and Park [2] as an analogous to rotatability property, which is an important design criterion for response surface design. Slope-rotat...
Open access
Research Article10.9734/ajpas/2020/v6i430165
The stock market in an emerging country like Pakistan has been volatile from the earliest times. This paper studies the volatility of Pakistan Stock Exchange (PSX) (using Karachi Stock Exchange 100 Index (KSE-100) as a proxy) through the application of Generalized Autoregressive...
Open access
Research Article10.9734/ajpas/2020/v6i430166
In this study, change detection in Out-patient and In-patient malaria cases in the Northern Region of Ghana was examined using time series intervention analysis. Data on monthly Out-patient and In-patient malaria cases obtained from the Northern Regional Health Directorate were m...
Open access
Research Article10.9734/ajpas/2020/v6i330164
Population increases with time through birth, and researchers have often used either Logistic regression model or Discriminant analysis to study and classify birth outcomes. In this paper, the authors sought to investigate the sensitivity of the two methods used separately to exp...
Open access
Research Article10.9734/ajpas/2020/v6i330163
Bayes factor is a major Bayesian tool for model comparison especially when the model priors are the same. In this paper, the Savage-Dickey Density Ratio (SDDR) is used to derive the Bayes factor to select a model from two competing models under consideration in a normal linear re...
Open access
Research Article10.9734/ajpas/2020/v6i330162
This study investigated the Effect of Levels of Education on the Choice of Medical Treatment Options for three illnesses (Malaria, Mental Disorder and HIV/AIDS) in Nigeria. The study was carried out in ten randomly selected Local Government Areas (L. G. As) in Imo State using a s...
Open access
Research Article10.9734/ajpas/2020/v6i330160
This study discusses the effects of missing observations on Buys-Ballot estimate when trend-cycle component of time series is linear. The method adopted in this study is Decomposing Without the Missing Value (DWMV) which is used to estimate missing observations in time series dec...
Open access
Research Article10.9734/ajpas/2020/v6i330161
Clients (expecting mothers) wait for hours in ante-natal clinic to receive medical service – waiting before, during or after being served. This study deals with a dynamic queuing system. Results of the study evaluate the effectiveness of queuing simulation model by identifying th...
Open access
Research Article10.9734/ajpas/2020/v6i230159
In this study, the incidence neonatal mortality in Abia State of Nigeria was considered using data from January 2014 to December 2018. The data was obtained from the Federal Medical Centre, Umuahia in Abia State of Nigeria. The time plot of the data and the ADF test conducted con...
Open access
Research Article10.9734/ajpas/2020/v6i230158
This study focuses on the modelling of Nigerian stock market all–shares index and evaluations of predictions ability using ARIMA, Artificial Neural Network and a hybrid ARIMA-Artificial Neural Network model. The ARIMA (1,1,1) model and neural network with architecture (6:1:3) tur...
Open access
Research Article10.9734/ajpas/2020/v6i230157