In which class are the grades most dispersed

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Reference no: EM13186064

the set of grades from different classes is recorded. inthe first class, the mean is 80 and the standard deviation is 2. inthe second class, the mean is 70 and the standard deviation is 5.in the third class, the mean is 72 and the standard deviation is 4. in which class are the grades most dispersed.

Reference no: EM13186064

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