Data Analysis, SM-Bank 015

A policeman is recording the speed of 25 cars travelling on a highway using a speed gun.

The results are shown in the stem-and-leaf plot.

What is the median speed? (1 mark)

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What is the range of the speeds? (1 mark)

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Show Answers Only

a. `119\ text(km/hr)`

b. `49\ text(km/hr)`

Show Worked Solution

a. `25\ text(data points)`

`text(Median is the 13th data point)`

`:.\ text(Median) = 119\ text(km/hr)`