Measures of central tendency and variation
 

Measures of central tendency and variation problem 2


Last Sunday, teams of runners took part in a charity event. The time taken, in seconds, to run was recorded, correct to 1 decimal place, for each runner. The times recorded for 11 runners from each of the Gulls and the Herons are shown in the table.




Find the median and the interquartile range of the times of the runners from the Gulls.


 

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