The following data give the numbers of orders received for a sample of 30 items at the Time-saver Mail Order Company. 34 44 31 52 41 47 38 35 32 39 28 24 46 41 49 53 57 33 27 37 30 27 45 38 34 46 36 30 47 50 Using 6 classes of equal width, construct a grouped frequency distribution of the above data. Let 22 be the lower limit of the initial class. 1.1 Calculate the mid-70% range. 1.1.2 Calculate the coefficient of variation and interpret the value obtained.
The following data give the numbers of orders received for a sample of 30 items at the Time-saver Mail Order Company. 34 44 31 52 41 47 38 35 32 39 28 24 46 41 49 53 57 33 27 37 30 27 45 38 34 46 36 30 47 50 Using 6 classes of equal width, construct a grouped frequency distribution of the above data. Let 22 be the lower limit of the initial class. 1.1 Calculate the mid-70% range. 1.1.2 Calculate the coefficient of variation and interpret the value obtained.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Question
The following data give the numbers of orders received for a sample of 30 items at the Time-saver Mail Order Company.
34 44 31 52 41 47 38 35 32 39
28 24 46 41 49 53 57 33 27 37
30 27 45 38 34 46 36 30 47 50
Using 6 classes of equal width, construct a grouped frequency distribution of the above data. Let 22 be the
lower limit of the initial class.
1.1 Calculate the mid-70%
1.1.2 Calculate the coefficient of variation and interpret the value obtained.
|
Class interval |
Frequency (f) |
Midpoint (x) |
Cumulative Frequency (CF) |
fx |
fx² |
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22 < 28 |
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28 < 34 |
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34 < 40 |
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40 < 46 |
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|
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46 < 52 |
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|
|
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52 < 58 |
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∑f |
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∑ = |
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