In a debate on altering the traffic system in the city centre,
measurement of a number...
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In a debate on altering the traffic system in the city centre,measurement of a number of cars per minutes were taken at twointersections during the hours between 07h00 and 08h00 (when theroads were most busy). The results are shown in the tablebelow:
Number of cars
frequency
10-14
5
15-19
8
20-24
10
25-29
12
30-34
14
35-39
5
40-44
3
45-48
3
Average
Median and the mode
Standard deviation
Interquartile range
Co-efficient of variation
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Descriptive StatisticsFirst we construct the following
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