Читать книгу Introduction to Statistical Process Control - Muhammad Amir Aslam - Страница 18

The weights of 10 items selected from the assembly line are given as

24.3, 24.9, 23.6, 25.1, 26.7, 22.0, 21.8, 23.4, 24.1, and 20.8. Calculate mean of the weights:

The mean for the group data can be calculated as

 ii) The Median

The median is defined as the value that divides the data into two equal parts. It is denoted by . The median calculation for the ungrouped data can be made as