This paper aimed at modelling the volatility of monthly average official exchange rate (Naira/USD) using the Autoregressive Integrated Moving Average (ARIMA) and Generalized Autoregressive Conditional Heteroscedasticity (GARCH) for the period January, 1981 to December, 2021. The...
Open access
Research Article10.9734/ajpas/2023/v22i2479
In the last two years the price of oil and its fluctuations have reached levels never recorded in the history of international oil markets. The determinants of past, current, and future levels of the price of oil and its fluctuations have been the subject of analysis by academics...
Open access
Research Article10.9734/ajpas/2023/v22i1473
This research effort used an upholstery factory as a case study to apply the idea of integer programming for an ideal model. In order to allocate limited and readily available material resources to competing products (Bed (6x6ft), Bed (6x4ft), Wardrobe (6x6ft), Wardrobe (6x4ft),...
Open access
Research Article10.9734/ajpas/2023/v22i1474
Median as a measure of location gives a more robust estimate than the mean when dealing with heavy tailed or skewed distributions. It can also be used in cases of qualitative variables and open end intervals. Calibration, an approach that adjusts the original design weight by inc...
Open access
Research Article10.9734/ajpas/2023/v21i4472
This paper presented a two discrete family of life distributions called discrete complementary exponentiated-G Poisson family and discrete Zubair-G family as a special case from discrete complementary exponentiated-G Poisson family. Some basic distributional properties are derive...
Open access
Research Article10.9734/ajpas/2023/v21i4471
Entropy can be mathematically defined as a measure of the uncertainty of random variables that represents the potential quantity of information. This article investigates the behavior of the entropy of random variables which follow a Kumaraswamy distribution using progressively f...
Open access
Research Article10.9734/ajpas/2023/v21i4470
Background: Sojourn time refers to the amount of time a HIV patient spends in each clinical state in a single stay before he/she makes a transition to another state. HIV can be broken down into a number of intermediate states, based on CD4 counts. The four states of the Markov p...
Open access
Research Article10.9734/ajpas/2023/v21i4468
Varma [1,2] entropy has attracted attention for a new class of non-linear integer programming problems that arise during the course of discussion. Our focus in this communication is to explore the techniques of dynamic programming. This process requires splitting any optimizatio...
Open access
Research Article10.9734/ajpas/2023/v21i4469
The present paper deals with the formulation of a generalized class of ratio-cum-product estimators for the estimation of a finite population mean in two-phase sampling. The mathematical expressions for the mean square errors (MSEs) of the preliminary and proposed estimators are...
Open access
Research Article10.9734/ajpas/2023/v21i3467
The Weibull-inverse exponential-loglogistic distribution which is abbreviated as (Weibull-IE-loglogistc) is a member of the neotric T- inverse exponential family introduced previously by the authors. Properties of this distribution such as (mode, quantile function, median, hazard...
Open access
Research Article10.9734/ajpas/2023/v21i3466