Answered: 7-It is desired to investigate whether…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

7-It is desired to investigate whether the departments of the first year engineering department students of a university's engineering faculty affect the success. For this, 3 engineering departments and 3 students randomly from these departments were selected. The grades these students received from the statistics course are given in the table below. Find the calculation value using the Friedman S test according to this table.

0.667

2,330

NS)

4,323

2,000

TO)

0.717

Ö1
Ö2 Ö3
Chapters
industrial engineering
80
53 60
Computer engineering
75
65
90
70
73 55
Mechanical Engineering

Expert Solution

Friedman S test :

Friedman test is a non parametric test and it uses to check the significance difference between more than 2 sample medians.

Friedman S test statistic is defined as shown below

$S = \frac{12}{n k (k + 1)} * {\sum R^{2} - 3 n (k + 1)}_{}^{}$

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