A group of 20 prisoners in a particular cellblock were tested on their knowledge of the...

A group of 20 prisoners in a particular cellblock were tested on their knowledge of the

rules of the institution. The marks (out of a possible score of 70) were as follows:

31, 28, 27, 19, 18, 18, 41, 0, 30, 27, 27, 36, 41, 64, 27, 39, 20, 28, 35, 30.

a) Calculate the range, variance and standard deviation for these data.

b) Remove the largest and smallest scores. Re-calculate the range, variance and

standard deviation.

c) Compare the measures of dispersion for the two distributions. Are there any

differences? If so, how would you account for them?

Solutions

Expert Solution

orchestra answered 1 year ago

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