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secondary 4 | E Maths
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Median is 42
IQR = 46 - 37 = 9
From the graph there are 73 people who had a speed of no more than 50 km/h and 7 people who exceeded the limit.
The percentage is 7/80*100% = 8.75%.
Median morning speed is higher at 42 km/h than afternoon speed of 40 km/h.
There is a greater spread of speed data of the morning riders at an IQR value of 46 - 37 = 9 than the afternoon riders at an IQR value of 42 - 34 = 8.
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