New Approaches in Frequency Table Construction for Continuous Symmetrical Data

Matematika

article

Mohammed Bappah Mohammed¹  Mohammad JamiluddinSubhi²  Asyraf Abdul WafiJamsari³ 

[1] Department of Mathematics and Statistics, Federal University of Kashere 0182 Gombe State;Department of Science and Biotechnology, Universiti Selangor Batang Berjuntai 45600;Department of Mathematics, Universiti Putra Malaysia 43400

关键词: Frequency Table;    Midpoint;    Continuous Data;    Statistic Value;   

DOI  :  10.11113/matematika.v38.n3.1415

学科分类：社会科学、人文和艺术（综合）

来源: Universiti Teknologi Malaysia * Fakulti Sains

【 摘 要 】

In computing statistical measures from a frequency table, the midpoint represents the observations in each class. The assumption that the observations are distributed uniformly and concentrated around the midpoint is not always valid. In this article, two new methods of constructing a frequency table, using the mean and median of the classes, are compared with the existing method, which uses the midpoint. The simulation study using symmetrical positive data shows that the method which used the classes’ mean performed well compared with the other methods. Freedman and Diaconis (FD) rule is the recommended rule when choosing the number of classes.

【 授权许可】

Unknown