Course name is ; TRANSPORTATION AND TRAFFIC ENGINEERING THANX A LOT

Hello this is my homework. me ! Course name is ; TRANSPORTATION AND TRAFFIC ENGINEERING THANX A LOT !! İ LL GİVE MAX RATE 🙂 Transcribed Image Text: Table Q2 shows the results of a survey of spot speed on Guzelyurt – Lefke highway.
Table Q2
Speed class
(kph)
Ave speed
(kph)
Number of
observations
35-45
40
3
45-55
50
14
55-65
60
61
65-75
70
100
75-85
80
126
85-95
90
148
95-105
100
97
105-115
110
40
115-125
120
34
125-135
130
25
135-145
140
10
145-155
150
2
155-165
160
165-175
170
Therefore;
Find the modal speed
(i)
(ii) Calculate the time mean speed
(iii) Find the standard deviation
(iv) Find the median speed
(v)
Find the 15 percentile and 85 percentile specds
2.

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