Question 19

Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18

Solution

17, 18, 28, 19, 16, 18, 17, 29, 18

Arrange it in ascending order,

16, 17, 17, 18, 18, 18, 19, 28, 29

Mode = 18 because 18 occurs maximum time

Range = Difference of highest and lowest value = 29 - 16 = 13.

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