Heights of 25 children (in cm) in a school are as given below:`168,165,163,160,163,161,162,164,163,162,164,163,160,`
`163,163,164,163,160,165,163,162` . What is the mode of the hights?

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.

Calsulate Q_(1)and Q_(3) of the heights (in cm) of 12 person, 150,153,154,148,160,162,163,168,166,167,151,156 a Also calculate median.

Observe the given data of the height of 15 studetns (in cm 146, 139, 135, 136, 149, 166, 164, 152, 163, 141, 171, 155, 144, 159, 146 Match the lists : {:(" List - I ", " List - II" ),(" (i) Range of the data is "," (p) 151 . 0 6 cm "),(" (ii) Mean height of the students is "," (q) 146 cm "),(" (iii) Median of the data is "," (r) 36 cm "),(" (iv) Mode of the data is "," (s) 149 cm "):}

2, 4, 8, 16,3, 9, 27, 81,5, 25, 125, 625, ?, ?, ?, ?

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 Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160-165, 165-170, etc.

The following is the distribution of height of students of a certain class in a certain city: {: ("Height (in cms)", 160-162 163-165 166-168 169-171 172-174), ("No. of students", 15 118 142 127 18):} Find the median height.

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?

Given the height (in cm) of 10 persons , calculate standard deviation and coefficient of variation : 170 , 165 , 150 , 154 , 163 , 169 , 155 , 153 , 164 , 168

The heights of students are given in cm as 161, 190, 185, 163, 172, 180, 162. The median height of the student is: