A group of 20 students recorded their heights (in cm) the data received were as given below. What is the range 150 ,120, 112, 160 ,155,151,158 ,142 ,148 ,149 , 161,165,140,157 ,156,146,145 ,153,138 ,120

The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: 161 150 154 165 168 161 154 162 150 151 162 164 171 165 158 154 156 172 160 170 153 159 161 170 162 165 166 168 165 164 154 152 153 156 158 162 160 161 173 166 161 159 162 167 168 159 158 153 154 159 Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160-165, 165-170, etc.

The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: 161 150 154 165 168 161 154 162 150 151 162 164 171 165 158 154 156 172 160 170 153 159 161 170 162 165 166 168 165 164 154 152 153 156 158 162 160 161 173 166 161 159 162 167 168 159 158 153 154 159 What can you conclude about their heights from the table?

The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: 161 150 154 165 168 161 154 162 150 151 162 164 171 165 158 154 156 172 160 170 153 159 161 170 162 165 166 168 165 164 154 152 153 156 158 162 160 161 173 166 161 159 162 167 168 159 158 153 154 159 (i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165, 165 - 170, etc. (ii) What can you conclude about their heights from the table?

The heights (in cm) of 30 students of class VIII are given below: 155,158,154,158,160,148,149,150,153,159,161,148,157, 153,157,162,159,151,154,156,152,156,160,152,147,155,163,155, 157,153 Prepare a frequency distribution table with 160-164 as one of the class intervals.

The heights (in cm) of 9 students of a class are as follows: 155, 160, 145, 149, 150, 147, 152, 144, 148 Find the median of this data.

The heights (in cm) of 9 students of a class are 148,144,152,155,160,147,150,149,145. find the median height.

Find the range of heights of ten students of a class. Heights of students are :- 120cm, 125 cm, 150cm, 110cm, 148cm, 143cm, 105cm, 149cm, 130cm, 115cm.

Given below are are the heights (in cm) of 11 boys of a class: 146, 143, 148, 132, 128, 139, 140, 152, 154, 142, 149. the range of the given data is