2 publications

• Published Subscription 21 Nov 2019

  A Comparison among Twenty-Seven Normality Tests

  By Md. Siraj- Ud- Doulah

  Abstract: This paper studies and compares the power of 27 normality tests via the Monte Carlo simulation of sample data generated from symmetric three short-tailed and three long-tailed, asymmetric three short-tailed and three long-tailed distributions under different sample sizes by using R codes. Our simulation results showed that for symmetric short-tailed Uniform (0, 1), t (10) and Beta (4, 4) distributions showed that the Agostino-Pearson K2, Jarque Bera and Kurtosis tests …

  Published in Research & Reviews : Journal of Statistics · Vol. 8, Issue 3, 2019 · pp. 41–59 Read article →

• Published Subscription 19 Apr 2019

  An Alternative Robust Measure of Outlier Detection in Univariate Data Sets

  By Md. Siraj- Ud- Doulah, Md. Hafizul Islam

  Abstract: A univariate outlier is a data point that consists of an extreme value on one variable. Here we applied two types of outlier detection methods: one is graphical and another is analytical. This paper presents graphical methods for different statistical outlier detection such as scatter diagram, box plot and normal probability plot. Furthermore, the quantitative methods for outlier detection in this paper are the IQR method, SD method, Z-score method, …

  Published in Research & Reviews : Journal of Statistics · Vol. 8, Issue 1, 2019 · pp. 1–11 Read article →