4. Compute the mean, median, standard deviation and IQR by hand for the following sample. You must show all work to receive credit. Please show mean first, median second, standard deviation third, and IQR fourth. 64, 68, 86, 76, 80, 72, 36 5. Consider the following two graphs of height of a sample of college students, which includes males and females. The two graphs depict the same data. Frequency 10 Mean-67.04 Std. Dev. 3.841 N=205 height Male 60.00 65.00 70.00 75.00 80.00 85.00 height 60.00 65.00 70.00 75.00 80.00 (a) Which graph makes it easier to detect unimodal and bimodal? Why? (b) Which graph makes it easier to detect skewness and symmetry? Why? (c) Which graph makes it easier to detect outliers? Why?