Example 4.2 Determining Speed Characteristics from a Set of Speed Data Table 4.2 shows the data collected on a rural highway in Virginia during a speed study. Develop the frequency histogram and the frequency distribution of the data and determine: 1. The arithmetic mean speed 2. The standard deviation 3. The median speed 4. The pace 5. The mode or modal speed 6. The 85th-percentile speed Table 4,2 Speed Data Obtained on a Rural Highway Speed (mi/h) Speed (mi/h) Speed (mi/h) Speed (mi/h) Car No. Car No. Car No. Car No. 47.8 67 56.0 45 46 1 35.1 23 46.1 44.0 24 54.2 47.1 68 49.1 34.8 52.4 49.2 56.4 69 47 48 52.3 3. 4. 25 26 45.8 44.3 57.3 70 46.8 49 49.1 71 48.5 5. 6. 36.3 27 54.0 28 57.8 50 37.1 72 45.4 7. 42.1 29 36.8 51 65.0 73 48.6 52.0 49.8 74 52 53 49.5 52.2 48.4 30 55.8 50.1 51.8 9. 31 43.3 75 10 50.8 32 55.3 54 76 63.4 11 38.3 33 39.0 55 42.8 77 60.1 34 53.7 56 49.5 78 48.8 12 44.6 52.1 48.7 61.8 57 48.6 79 35 36 40.8 54.5 13 45.2 58 41.2 80 14 41.1 15 55.1 37 51.6 59 48.0 81 82 83 56.6 48.2 60 58.0 51.7 50.3 16 50.2 38 17 54.3 39 61 49.0 84 85 62.1 53.3 53.4 62 41.8 59.8 40.3 55.1 45.0 48.3 18 19 45.4 55.2 40 41 63 48.3 45.9 86 64 65 20 45.7 42 44.7 21 54.1 43 66 49.5 22 54.0 44

Example 4.2 Determining Speed Characteristics from a Set of Speed Data Table 4.2 shows the data collected on a rural highway in Virginia during a speed study. Develop the frequency histogram and the frequency distribution of the data and determine: 1. The arithmetic mean speed 2. The standard deviation 3. The median speed 4. The pace 5. The mode or modal speed 6. The 85th-percentile speed Table 4,2 Speed Data Obtained on a Rural Highway Speed (mi/h) Speed (mi/h) Speed (mi/h) Speed (mi/h) Car No. Car No. Car No. Car No. 47.8 67 56.0 45 46 1 35.1 23 46.1 44.0 24 54.2 47.1 68 49.1 34.8 52.4 49.2 56.4 69 47 48 52.3 3. 4. 25 26 45.8 44.3 57.3 70 46.8 49 49.1 71 48.5 5. 6. 36.3 27 54.0 28 57.8 50 37.1 72 45.4 7. 42.1 29 36.8 51 65.0 73 48.6 52.0 49.8 74 52 53 49.5 52.2 48.4 30 55.8 50.1 51.8 9. 31 43.3 75 10 50.8 32 55.3 54 76 63.4 11 38.3 33 39.0 55 42.8 77 60.1 34 53.7 56 49.5 78 48.8 12 44.6 52.1 48.7 61.8 57 48.6 79 35 36 40.8 54.5 13 45.2 58 41.2 80 14 41.1 15 55.1 37 51.6 59 48.0 81 82 83 56.6 48.2 60 58.0 51.7 50.3 16 50.2 38 17 54.3 39 61 49.0 84 85 62.1 53.3 53.4 62 41.8 59.8 40.3 55.1 45.0 48.3 18 19 45.4 55.2 40 41 63 48.3 45.9 86 64 65 20 45.7 42 44.7 21 54.1 43 66 49.5 22 54.0 44

Name: Traffic EngineeringDr. Jalal Taqi Shaker Al-UbaediExample: (Garber pa
Uploaded: 2024-03-20T07:06:16.000Z
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Description: Traffic EngineeringDr. Jalal Taqi Shaker Al-UbaediExample: (Garber page 109)Example 4.2 Determining Speed Characteristics from a Set of Speed DataTable 4.2 shows the data collected on a rural highway in Virginia during a speedstudy. Develop the freq

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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Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.

Topic Video

Question

Traffic Engineering
Dr. Jalal Taqi Shaker Al-Ubaedi
Example: (Garber page 109)
Example 4.2 Determining Speed Characteristics from a Set of Speed Data
Table 4.2 shows the data collected on a rural highway in Virginia during a speed
study. Develop the frequency histogram and the frequency distribution of the data
and determine:
1. The arithmetic mean speed
2. The standard deviation
3. The median speed
4. The pace
5. The mode or modal speed
6. The 85th-percentile speed
Table 4,2 Speed Data Obtained on a Rural Highway
Speed
(mi/h)
Speed
(mi/h)
Speed
(mi/h)
Speed
(mi/h)
Car No.
Car No.
Car No.
Car No.
67
56.0
45
46
47
47.8
46.1
54.2
1
35.1
23
49.1
47.1
34.8
2.
44.0
24
68
3.
45.8
25
52.3
69
49.2
4
44.3
26
57.3
48
52.4
70
56.4
36.3
27
46.8
49
49.1
71
48.5
54.0
28
57.8
50
37.1
72
45.4
29
36.8
51
65.0
73
48.6
7.
8.
42.1
74
52.0
52
53
49.5
52.2
50.1
30
55.8
9.
51.8
31
43.3
75
49.8
10
50.8
32
55.3
54
48.4
76
63.4
11
38.3
33
39.0
55
42.8
77
60.1
12
44.6
34
53.7
56
49.5
78
48.8
52.1
79
80
48.6
57
58
40.8
45.2
41.1
35
36
13
54.5
41.2
48.7
14
59
48.0
81
61.8
51.6
51.7
15
55.1
37
60
58.0
82
56.6
38
50.2
54.3
16
50.3
61
49.0
83
48.2
17
39
84
62.1
62
63
41.8
48.3
40
59.8
45.4
55.2
18
85
53.3
19
41
40.3
64
45.9
86
53.4
20
45.7
42
55.1
44.7
49.5
21
54.1
43
45.0
65
22
54.0
44
48.3
66

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