QUESTION THREE The data below shows the examination marks (as percentages) of 25 students obtained in a Business Data Analysis Course. 68 72 39 50 69 52 51 50 41 71 42 57 34 52 65 37 45 78 48 55 53 61 57 66 87 (a) Develop a stem- and leaf chart (b) Determine the mean (c) Determine the median (d) Determine the mode (e) Determine the range (f) Determine the first quartile (g) Determine the third quartile (h) Determine the semi interquartile range (i) Draw a box plot and say how the box plot is skewed