This task is about reading information from graph.
Number of Vehicles Travelling at Different Speeds
A speed camera was on a road with a speed limit of 50 km/h. The graph above shows the speeds of 80 vehicles as they passed the camera.
Answer the following questions about this graph.
| a) |
How many vehicles were travelling within the speed limit? __________
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| b) |
What percentage of vehicles were going faster than 30 km/h? __________ %
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| c) |
If the police department allows a margin of error of 10 km/h before giving out a speeding ticket, how many drivers would receive a speeding ticket? __________
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| d) | The median speed of vehicles passing the camera is in which of these ranges? |
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(A) (B) (C) (D) (E) |
31-35 km/h 36-40 km/h 41-45 km/h 46-50 km/h It is impossible to tell. |
| e) |
One car passed the speed camera at 100 km/h. Why can you not tell this from the graph?
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| f) |
What are two problems with the way this histogram has been set up?
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