The IQ scores of 50 students are given below.

102 95 89 91 111 111 92 118 90 116
92 102 100 101 118 119 98 89 102 105
109 117 98 99 109 108 117 103 87 106
111 112 112 87 109 116 105 85 118 91
96 100 85 105 90 116 101 117 95 100
(a) Construct a grouped frequency distribution for the data. Use 85-89 for the first class and use the same width for each subsequent class.