Students studying at a university; The results of the (statistics) exam, 50 and greater than 50, are as follows. According to this;

DATA: 68 84 75 82 68 90 62 88 76 93 73 79 88 73 60 93 71 59

85 75 61 65 75 87 74 62 95 78 63 72 66 78 82 75 94 77 69 74 68 60 96 78 89 61 75 95 60 79 83 71 79 62 67 97 78 85 76 65 71 75 65 80 73 57 88 78 62 76 53 74 86 67 73 81 72 63 76 75 85 77

Construct the cumulative frequency distribution using the example given above and draw the cumulative frequency polygon.