Question

The Height of 20 students of a class (cm) is as given 130 128 133 134 130 129 140 140 150 149 149 146 143 129 1301 401 541 531 281 43 Prepare Frequency distribution for the above data

Answer 1

Answer:

Minimum height =131cm

Maximum height =156cm

Range =156−131=25

Number of classes =4

Class range =

4

25

=6.25 approx 6

class 1=131+6=137

class 2=137+6=143

class 3=143+6=149

class 4=149+6155

class 5=155+6=161

Class interval Frequency

131−137 9

137−143 3

143−149 2

149−155 4

155−161 2

Answer 2

Given : Height of 20 students of a class (cm) is as given

130 128 133 134 130 129 140 140 150 149 149 146 143 129 130 140 154 153 128 143

To Find : Prepare Frequency distribution for the above data

Solution:

Height  Tally Mark   Frequency

128        ||                   2

129       ||                    2

130       |||                   3

133        |                     1

134        |                      1

140       |||                  3

143       ||                   2

146       |                     1

149       ||                     2

150       |                     1

153       |                     1

154        |                     1

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