The data below are the waiting times between eruptions of the Old Faithful geyser in Yellowstone National Park. Use one of the graphical methods from this chapter to describe the distribution of waiting times. If there are any unusual features in your graph, see if you can think of any practical explanation for them.

56 89 51 79 58 82 52 88 52 78 69 75 77 53 80 54 79 74 65 78 55 87 53 85 61 93 54 76 80 81 59 86 78 71 77 89 45 93 72 71 76 94 75 50 83 82 72 77 75 65 79 72 78 77 79 72 82 74 80 49 75 78 64 80 49 49 88 51 78 85 65 75 77 69 92 91 53 86 49 79 68 87 61 81 55 93 53 84 70 73 93 50 87 77 74 89 87 76 59 80