Research Papers/Topics in Statistics

On the Comparison of Some Link Functions of Binary Response Analysis Under Symmetric and Asymmetric Assumption

Binary response analysis is modeled when the response variable is nominal and as such violates the use of the ordinary linear regression model. This paper utilizes the classical approach to fit a categorical response regression model using the logit, probit. loglog and the complementary loglog (Cloglog) link functions under symmetric and asymmetric assumptions. It is captured in past studies that we can only make comparisons between these link functions when n is large say (n > 1000), In ...

On Efficient Memory-Type Control Charts for Monitoring out of Control Signals in a Process Using Diabetic Data

Control chart is a useful technique which helps in detecting out of control signal in a process and it can either be a memory-type or memory-less control chart. This work is focused on evaluating the monthly incidence of diabetic disease using four univariate memory-type control charts. In this study we evaluated the average run length (ARL) properties of the memory-type control charts by adjusting the ARL value’s determinant parameters in each control charts, and the ARL value was set to...

Modeling Monthly Average Temperature of Dhahran City of Saudi-Arabia Using Arima Models

Temperature is the coldness and hotness of the body and its unit is measured in Celsius. The data used for this research work is the average monthly temperature of Dhahran city which is located in the Kingdom of Saudi Arabia. The data range is from 1951 to 2010, and sample data of 1951 to 2008 was used for the estimation to choose the best model and the sample data from 2009 through 2010 was left for the forecast. Different models were tried but ARIMA (2, 1, 1) (0, 1, 1)12 is selected as ...

ANALYTICAL STUDY ON THE OPTIMIZATION OF CROP NUTRIENTS USING THE RANDOMIZED COMPLETE BLOCK DESIGN MODE

AbstractThis paper attempts to evaluate the application of randomized complete block design (RCBD) model in improving crop production. Data for the study was sourced from an experiment that lasted for three weeks. The data were analyzed using SPSS package. After exploring the concept of the RCBD technique, the response of the soil nutrient to the treatment of the various manure types revealed that, there was a significant difference on crop yield with respect to&...

An_Assessment_of_the_Impact_of_Selected_Demographic_Characteristics_on_Fertility_Differentials

AbstractThe current fertility rate(FR) reporting in developing and under developed countries of the globe has drawn the attention of national and demographic planners in seeking for solution to reduce the population growth and its attendant global consequences. It is in this light that this study seeks to determine some significant demographic characterization responsible for influencing fertility behavior and differentials. Using a random sample of 570 mothers both from a rural and urb...

A_STUDY_ON_APPLICATION_OF_ACCEPTANCE_SAMPLING_PLAN_IN_PROCESSING_CONTROL_AND_MONITORING

AbstractThis study examined the use of acceptance sampling technique as an efficient tool for quality assurance in deciding whether a given lot of product is to be accepted or rejected in the market. This study designed two single sampling plans with a sample size of 125 from a lot of size 1350 bread loaves and an allowable number of defectives as 4 and 6 (i.e. c=4 and 6). The result indicated that the probability of rejecting the manufacturers’ product of good quality by the consume...

A COMPARATIVE STUDY OF STUDENTS ACADEMIC CONCEPTS USING JAMB SCORES AND CGPA, (A CASE OF BENUE STATE UNIVERSITY, MAKURDI)

ABSTRACTThis research compare the students’ academic performance using JAMB scores and CGPA inBenue state University Makurdi, and the level at which the divergence in grades started is ofparamount importance. Two faculties in the institution were selected. The multiple regressionanalysis carried  out  shows that  JAMB scores as  well as  yearly  GPAs can predict  the  finalCGPA. From the student (t) distribution it was observed that the model contribu...

THE STATISTICAL ANALYSIS OF THE EFFECTS OF SOME FACTORS INFLUENCING HYPERTENSION (A CASE STUDY OF UNIVERSITY OF ILORIN TEACHING HOSPITAL (UITH), ILORIN) 2007 – 2012

ABSTRACTThis research work examines the effects of some factors influencing Hypertension, and the data used was obtained from the case-hypertensive patients’ record at the University of Ilorin Teaching Hospital (2007 - 2012). Basically, the target of this research are patients of infections/diseases (e. g. HIV/AIDS) that later developed hypertension. The Pearson’s Chi-square test statistic – testing for independence, the Odds ratio, Relative risk and Pearson’s product moment correlati...

Trend of Neonatal Mortality in Nigeria from 1990 to 2017 using Time Series Analysis

The study examined the incidence of the rate of Neonatal Mortality in Nigeria. The incidence tested with use of Time Series Analysis (ARIMA). The trend plot of the incidence shows that there has been steady decrease in the incidence rate over the years. The series was stationarity using the Augmented Dickey-Fuller (ADF) Test, the result found to be stationary. The Correlogram of the incidence also supports the stationarity of the series at 1% level of significance. The model that best describ...

ALFRED NON-OIL EXPORTS ON ECONOMIC GROWTH

ABSTRACTThe research focuses on the impact of non-oil exports on Nigerian economy. It employs the documentary method in retrieving secondary data for the study. The data is retrieved from the CBN statistical bulletin for the year 2016. The method of data analysis is the ordinary least square (OLS) method of multiple regressions using the Microfit software. At the end of the analysis, it is discovered that non-oil exports has a significant impact on the economic growth of Nigeria. I rec...

LOGISTIC REGRESSION ON EFFECT OF TUBERCULOSIS AND MALARIA ON HIV

Logistic regression model deals with the relationship that exists between a dependent variable and one or more independent variables. It provides a method for modeling a binary response variable, which takes values 1 and 0. Further, Logistic regression is useful for situations in which you want to be able to predict the presence or absence of a characteristic or outcome based on values of a set of predictor variables. It is similar to a linear regression model but is suited to models wh...

Modeling the Supply of Pipe Borne Water in Ilorin

ABSTRACTWater as an essential commodity plays a major role in national development, the availability of water through pipe borne to individual, communities, and the country at large will help in achieving the New Millennium Development Goal (MDG7), hence the constant study, analysis and forecast for  supply of water using past water supplied. The supply of pipe borne water from 2009 to 2015 was examined with the aim of developing a working model to forecast future supply of pipe borne water....

STATISTICAL ANALYSIS ON STILL-BIRTH AND LIVE BIRTH-RATE

ABSTRACT Stillbirth remains a public health problem with an estimate of 2.6 million stillbirths in 2015 of which 98% occurred in low- and middle-income countries and over three-quarters of these occurring in Sub-Saharan Africa (SSA) and south Asia. Further, only ten countries carry the burden of over 65% of total stillbirths in the world including Nigeria in the second position. The objective of this analysis is to estimate stillbirth rates and identify the determinants of st...

ANALYSIS OF CURRENCY DEVALUATION IN NIGERIA

ABSTRACT The primary aim of this project is to estimate the long run relationship between economic growth and currency devaluation. This project investigated the impact of currency devaluation on economic growth of Nigeria. This was achieved through a review of literature. In order to generate the necessary data for this research, the Central Bank of Nigeria Statistical Bulletin of and publications of the National Bureau of Statistics were used for the period of 2008 to 2017. The...

STATISTICAL ANALYSIS ON THE AWARENESS AND USAGE OF INTERNET LIBRARY AMONG UNDERGRADUATE STUDENTS IN YABA COLLEGE OF TECHNOLOGY (2)

ABSTRACT  For schools to be effective, computer literacy should be demonstrated through computer availability as well as student’s awareness and usage of library related website. The research design is a descriptive survey which comprises a sample of 383 students randomly selected from a population of YABATECH students. The research instrument is a well-designed questionnaire for students. The statistical tools employed in to analyze the data are frequency and percentage ...

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