3. Transportation engineers are considering changing the speed limit on a rural road. Every day for 1 week, a technician records speeds of vehicles using the road in kilometres per hour. Here is a representative sample of data: 76 74 78 75 69 68 87 90 73 70 68 72 85 78 72 70 75 75 76 65 a) What are the quartiles for this data set? b) Determine the 85th percentile speed for these data.
3. Transportation engineers are considering changing the speed limit on a rural road. Every day for 1 week, a technician records speeds of vehicles using the road in kilometres per hour. Here is a representative sample of data: 76 74 78 75 69 68 87 90 73 70 68 72 85 78 72 70 75 75 76 65 a) What are the quartiles for this data set? b) Determine the 85th percentile speed for these data.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text:3. Transportation engineers are considering changing the speed limit on a rural
road. Every day for 1 week, a technician records speeds of vehicles using the
road in kilometres per hour. Here is a representative sample of data:
87 90 73 70
76
74
78 75
69
68
68
72
85
78
72
70 75 75
76 65
a) What are the quartiles for this data set?
b) Determine the 85th percentile speed for these data. (K
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