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The marks obtained by the students of a class in Maths class test (out of 30) were as follows:
12, 23, 29, 15, 30, 20, 22, 24, 28, 30, 12, 11, 15, 16, 18, 10.5, 28, 25, 11, 15
Find the range.

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19.5

answer is C.

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Detailed Solution

Solution:

The marks obtained are 12, 23, 29, 15, 30, 20, 22, 24, 28, 30, 12, 11, 15, 16, 18, 10.5, 28, 25, 11, 15

Highest marks obtained = 30

Lowest marks obtained = 10.5

∴Range= Highest marks-Lowest marks

=30-10.5=19.5

Hence, the range for marks obtained by students in the Maths class test is 19.5.

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