The range from the following observations is
$10, 18, 20, 28, 15, 17, 22, 25, 29, 32, 34$

24

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20

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30

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42

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Solution

The correct option is A $24$
Range is defined as the difference between the highest(or largest ) and lowest(or smallest) observed value in a series. It is the most simple and commonly understandable measures of dispersion.
Range = H - L
In the given series, H= 34 and L+ 10
Range = 34-10 = 24.

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