1) the set of grades from different classes is recorded. inthe first class, the

Question

1) 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?    a) thirdclass                              b)secondclass                           c)frist class 1) 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?    a) thirdclass                              b)secondclass                           c)frist class

Explanation / Answer

b) second class Standard deviation is essentially a measure of how much variationthere is from the average in a set of data. Therefore, theset of grades with the largest standard deviation is the "mostdispersed".

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