76 79 69 57

87 97 69 22

35 69 49 99

81 117 47 22

29 86 51 91

69 49 92 91

93 66 58 93

Construct a grouped frequency distribution table (GFDT) for this data set. You want 10 classes with a "nice" class width. Your classes should be labeled using interval notation. Each class contains its lower class limit, and the lower class limits should all be multiples of the class width. In that the data appears to be discrete, use a closed-interval to label each class.