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Statistics, NAP-K4-CA24 SA

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?

    kilometres per hour
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`119\ text(km/hr)`

Show Worked Solution

`25\ text(data points)`

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

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

Statistics, NAP-J3-CA37

The Stars and the Thunder are playing cricket in a 20 over competition.

The stem-and-leaf plots show the number of runs each side has scored in their last 15 games.
 

   

Select all the true statements about the data.

 
 The Stars had the lowest run score.
 
 The Stars had the highest run score.
 
 The Stars scored over 135 runs more times than the Thunder.
 
 The median score for The Stars is higher than the median score for The Thunder.
 
 The range of scores for The Stars is smaller than the range of scores for The Thunder.
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`text{The Stars had the highest run score.}`

`text{The range of scores for The Stars is smaller than the}`

`text{range of scores for The Thunder.}`

Show Worked Solution

`text(Correct statements are:)`

`text{The Stars had the highest run score (149 vs 148).}`

`text{The range of scores for The Stars is smaller than the}`

`text{range of scores for The Thunder (39 vs 40).}`