KERCISES For each of the data sets in the following exercises compute (a) the mean. (b) the median. (e) the mode. (d) the range, (e) the variance, () the standard deviation, (g) the coefficient of variation, and (h) the interquartile range. Treat each data set as a sample. For those exercises for which you think it would be appropriate, construct a box-and-whisker plot and discuss the usefulness in understanding the nature of the data that this device provides. For each exercise select the measure of central tendency that you think would be most appropriate for describing the data. Give reasons to justify your choice.