New procedure in testing differences between two groups

• Main Authors: Ahad, Nor Aishah, Othman, Abdul Rahman, Syed Yahaya, Sharipah Soaad
• Format: Article
• Language: English
• Published: Natural Sciences Publishing 2013
• Subjects: QA Mathematics
• Online Access: http://repo.uum.edu.my/21564/1/AMIS%207%2021%202013%20397%20401.pdf; http://repo.uum.edu.my/21564/; http://doi.org/10.12785/amis/072L03
• Institution: Universiti Utara Malaysia

Despite the theoretical correctness of the t-test in testing differences between two groups and the existence of the nonparametric backup, i.e. Mann-Whitney-Wilcoxon test, these test fail to simultaneously control Type I error and maintain adequate power under certain condition. This study intends t...