1. Assessing Normality Many times in statistics it is necessary to see if a set of data values is approximately normally distributed. There are special techniques that can be used. One technique is to draw a histogram for the data and see if it is approximately bell-shaped. (Note: It does not have to be exactly symmetric to be bell-shaped.) The numbers of branches of the 50 top libraries are shown. 67 84 80 77 97 59 62 37 33 42 36 54 18 12 19 33 49 24 25 22 24 29 9. 21 21 24 31 17 15 21 13 19 19 22 22 30 41 22 18 20 26 33 14 14 16 22 26 10 16 24
1. Assessing Normality Many times in statistics it is necessary to see if a set of data values is approximately normally distributed. There are special techniques that can be used. One technique is to draw a histogram for the data and see if it is approximately bell-shaped. (Note: It does not have to be exactly symmetric to be bell-shaped.) The numbers of branches of the 50 top libraries are shown. 67 84 80 77 97 59 62 37 33 42 36 54 18 12 19 33 49 24 25 22 24 29 9. 21 21 24 31 17 15 21 13 19 19 22 22 30 41 22 18 20 26 33 14 14 16 22 26 10 16 24
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1. Assessing Normality
Many times in statistics it is necessary to see if a set of data values is approximately normally
distributed. There are special techniques that can be used. One technique is to draw a
histogram for the data and see if it is approximately bell-shaped. (Note: It does not have to
be exactly symmetric to be bell-shaped.)
The numbers of branches of the 50 top libraries are shown.
67
84
80
77
97
59
62
37
33
42
36
54
18
12
19
33
49
24
25
22
24
29
9.
21
21
24
31
17
15
21
13
19
19
22
22
30
41
22
18
20
26
33
14
14
16
22
26
10
16
24
Source: The World Almanac and Book of Facts.
a. Construct a frequency distribution for the data.
b. Construct a histogram for the data.
c. Describe the shape of the histogram.
d. Based on your answer to question 3, do you feel that the distribution is approximately
normal?
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