Question 19

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

Solution

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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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