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Let following marks were obtained by ...

Let following marks were obtained by the students in a test: 81,72,90,90,86,85,92,70,71,83,89,95,85,79,62 The range of the marks is 9             (b)  17           (c)  27          (d)  33

Text Solution

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Observation are: `81,72,90,90,86,85,92,70,71,83,89,95,85,79,62.`
The minimum marks obtained are: `62` and Maximum marks obtained are: `95`
Thus, range = maximum marks − minimum marks `=95−62=33`
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