following in the data regarding the iq of 30 children of a school 106 118 112 120 103 105 99 139 65 113 108 116 93 100 120 100 108 100 112 110 109 117 98 103 99 110 95 101 105 98 prepare a frequency distribution with class intervals : less than or equal to 99,90-110,110-120,more than or equal to 120
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