QUESTION ONE A. The following table shows the marks obtained by applicants for a certain job in an aptitude test. 73 37 33 64 37 31 57 37 31 Sorted marks obtained by applicants 49 45 41 36 30 49 36 30 34 29 34 27 39 34 27 38 34 27 38 34 25 (i) Find the mean of the data set (ii) Find the standard deviation of the data set. (iii) Find the percentage of values that fall within two standard deviations around the mean. (iv) Find the percentage of values that fall within three standard deviations around the mean.
QUESTION ONE A. The following table shows the marks obtained by applicants for a certain job in an aptitude test. 73 37 33 64 37 31 57 37 31 Sorted marks obtained by applicants 49 45 41 36 30 49 36 30 34 29 34 27 39 34 27 38 34 27 38 34 25 (i) Find the mean of the data set (ii) Find the standard deviation of the data set. (iii) Find the percentage of values that fall within two standard deviations around the mean. (iv) Find the percentage of values that fall within three standard deviations around the mean.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:QUESTION ONE
A. The following table shows the marks obtained by applicants for a certain job in an
aptitude test.
73
37
33
64
37
31
57
37
31
Sorted marks obtained by applicants
49
45
41
36
34
34
30
29
27
49
36
30
39
34
27
38
34
27
(1) Find the mean of the data set
(ii) Find the standard deviation of the data set.
(iii) Find the percentage of values that fall within two standard deviations
38
34
25
around the mean.
(iv) Find the percentage of values that fall within three standard deviations
around the mean.
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The formula for calculating the mean is
The formula for calculating standard deviation is
Given that,
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