Research & Reviews : Journal of Statistics
Volume 7, Issue 2 (2018)
Published
Table of contents
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Analysis of Factors Associated with Perceived Stress Level among the Masters of Science Students of University Campus, Tribhuvan University, Kirtipur, Nepal
Abstract: Many studies conducted in the past have shown how the higher education can be a stressful period in a student’s life. A student’s life during this period is usually accompanied by various stressors unsettling him inwardly, physically and emotionally. This is a retrospective study with the aim to identify the factors influencing the status of perceived stress level among the students studying Masters of Science. This study is entirely based …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 1–6 Read article
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Estimation of Population Mean Under SRSWOR Using Imputation Technique
Abstract: This research work suggests four log-type imputation methods using auxiliary information for missing observations in a data set. These methods consist of corresponding point estimator for estimating population mean under simple random sampling without replacement. Bias and mean square error expressions are derived up-to first order of approximation. Percent relative efficiency of suggested estimators is compared with the existing estimators using four population real data sets. And it is empirically …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 12–20 Read article
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On a Generalization of Gumbel-Uniform Distribution
Abstract: In this paper, we introduce a generalization of Gumbel-Uniform distribution namely Marshall-Olkin Gumbel Uniform distribution and its properties are studied in detail. The expressions for survival function, quantile function, hazard function, etc. are derived and the shape properties are explored. The parameters are estimated using maximum likelihood estimation method. The new model is applied to a real data set on breaking stress of carbon fibres and it is established that …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 21–26 Read article
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Econometric Modeling for Oil Sectors Stock Prices Time Series Data
Abstract: This study examines the dynamic relationships of stock oil prices of different Indian oil sectors viz., Bharat Petroleum, Hindustan Oil Corporation and Oil and Natural Gas Corporation based on the different econometric models. Empirical result shows that the monthly oil prices are non-stationary and integrated of order one. Johanson procedure to test for the possibility of co-integration relationships result shows that there is no co-integration relationship. Since the variables are …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 27–34 Read article
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Asymptotic Tests for Truncation Parameters of several One-truncation Parameter Family of Distributions
Abstract: In this study, the authors have obtained the asymptotic tests for testing equality of truncation parameters of one truncation parameter family of distributions. The asymptotic conditional distribution of complete sufficient statistic of parameter of interest is obtained by conditioning the distribution of complete sufficient statistics of the nuisance parameters. Using this conditional distribution we have derived the asymptotic Uniformly Most Powerful Unbiased (UMPU) tests for testing hypothesis (i) one parameter …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 35–41 Read article
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Effect of Multimedia Instruction on Learning: A Case Study
Abstract: Multimedia are increasingly one of the most popular information access devices; and what stands out from the study is the high use of interactive, multi-user functions which can at times be disruptive or beneficial during the study. The use of multimedia in education has proven its importance due to its positive impact on the teaching and learning process. So, the present study investigates comparative effectiveness of multimedia-aided teaching on students’ …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 2, 2018 · pp. 7–11 Read article