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Open Journal of Statistics (OJS) is an international journal dedicated to the latest advancements in statistics. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of statistics. All…
Yemane Hailu Fissuh, Tsegay Giday Woldu, Idriss Abdelmajid Idriss Ahmed, Abebe Zewdie Kebebe
The consideration of the time-varying covariate and time-varying coefficient effect in survival models are plausible and robust techniques. Such kind of analysis can be carried out with a general class of semiparametric transformation models. The aim of this…
Maruf A. Raheem, Nse S. Udoh, Aramide T. Gbolahan
This work is geared towards detecting and solving the problem of multicolinearity in regression analysis. As such, Variance Inflation Factor (VIF) and the Condition Index (CI) were used as measures of such detection. Ridge Regression (RR) and the Principal Co…
Domingo Pavolo, Delson Chikobvu
Multiple response surface methodology (MRSM) most often involves the analysis of small sample size datasets which have associated inherent statistical modeling problems. Firstly, classical model selection criteria in use are very inefficient with small sample…
Octavia C. Y. Wong
Relative risk is a popular measure to compare risk of an outcome in the exposed group to the unexposed group. By applying the delta method and Central Limit Theorem, [1] derives two approximate confidence intervals for the relative risk, and [2] approximates…
Qiong Zhang, Shuang Chen
Most of the articles about insider trading assume that there is only one risky asset in the market. On the basis of these papers, this thesis is mainly divide d into three parts to study the situation of multiple risky assets in the market. In the first part,…
Ataul Mustufa Anik, Shabab Noor Islam, Shahber Hassan, Susmoy Saha, Nayema Taskin Nabila
Family planning is one of the essential tools for reducing maternal and neonatal mortality rate. Several potential factors influence the usage of contraception, and the purpose of the paper is to identify the relevant ones among them. Using the data of BDHS 2…
Mohamed M. Shoukri, Sara N. Algahtani, Abdelmoneim M. Eldali, Manal R. AlMarzouqi, Saleh M. Al-Ageel
Background : Factors associated with hospital mortality are usually identified and their effects are quantified through statistical modeling. To guide the choice of the best statistical model, we first quantify the predictive ability of each model and then us…
Habib Ahmed Elsayir
The aim of this article is to provide residual analysis for a time series data of Gross Domestic Product (GDP) of the Sudan. An econometric time series model with macroeconomic variables is conducted to examine the goodness of fit using residual. Many statist…
Dol Nath Khanal
Compound Poisson risk model has been simulated. It has started with exponential claim sizes. The simulations have checked for infinite ruin probabilities. An appropriate time window has been chosen to estimate and compare ruin probabilities. The infinite ruin…
Arvind Mohan, Ajay Pandey, Richa Sharma
Female age at marriage in Uttar Pradesh is amongst the lowest in India. Previous studies on female age at marriage in an Indian context primarily focused on the individual level factors impacting female age at marriage. Community level factors that influence…
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Open Journal of Statistics (OJS) is an international journal dedicated to the latest advancements in statistics. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of statistics. All… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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