answer all questions with explanation

The IQ scores of 50 students are given below. 107 114 115 105 119 87 111 108 101 106 96 93 108 102 106 101 108 102 98 85 88 86 115 98 106 101 94 97 87 116 109 101 92 113 108 116 93 110 99 100 108 92 95 108 91 107 98 90 100 116 (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. Class Frequency 85 - 89 (b) Which of the following is the correct histogram for this data