EXAMPLEThe accompanying data (Table Q2) shows spot speeds collected at Jalan Duta,Kuala Lumpur. Based on statistícal method, determine the values of thefollowing:i) Arithmetic mean speedii) Mode speediii) Median speediv) Standard deviationSpeed Class(km/hr)10-14.915 19.920 - 24.925-29.930 -34.935-39.9No ofvehicles40 - 44.945 - 49.950 -54.955 - 59.960 – 64.92654 7109564

speed range (km/hr) mean of speed range U (km/hr) no of vehicle , f u*f u*u*f Arithmetic mean…

Answered: The accompanying data (Table Q2) shows…

The accompanying data (Table Q2) shows spot speeds collected at Jalan Duta, Kuala Lumpur. Based on statistícal method, determine the values of the following:

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter4: Traffic Engineering Studies

Section: Chapter Questions

Problem 10P

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Concept explainers

Mapping

Mapping is the process of representing the surface of the earth, objects on it, and the relative positions of the objects, to a suitable scale. In mapping, a large area of land is measured, surveyed, and plotted. The details of the objects present in the nearby surrounding area are located using conventional signs. All these processes are carried out on a flat paper known as a map.

Question

EXAMPLE
The accompanying data (Table Q2) shows spot speeds collected at Jalan Duta,
Kuala Lumpur. Based on statistícal method, determine the values of the
following:
i) Arithmetic mean speed
ii) Mode speed
iii) Median speed
iv) Standard deviation
Speed Class
(km/hr)
10-14.9
15 19.9
20 - 24.9
25-29.9
30 -34.9
35-39.9
No of
vehicles
40 - 44.9
45 - 49.9
50 -54.9
55 - 59.9
60 – 64.9
2654 7109564

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