Statistics Question
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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Expert Solution
Step 1
(2)
Obtain the frequency table.
The frequency table is obtained below as follows:
Determine the number of classes.
The number of classes is obtained by using the formula:
Where, k denotes the number of classes
N denotes the number of observations.
From the information, given that n=20.
Step 2
Consider, the number of classes(k)=5. The smallest value(S) is 10 and the largest value(L) is 33 from the data given.
The width of the class is determined below:
The formula for the width of the class is,
Thus, the width of the class interval is 5.
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