Another useful measure of variation for a data set is the mean absolute deviation (MAD). It is calculated by the formula
MAD = ∑ |x - | / n.
(a) Find the mean absolute deviation of the data set in Exercise 15. Compare your result with the sample standard deviation obtained in Exercise 15.
Data set in Exercise 15
(b) Find the mean absolute deviation of the data set in Exercise 16. Compare your result with the sample standard deviation obtained in Exercise 16.
Data set in Exercise 16 |

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