Question

range of class interval 120 - 135 is *


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Answer 1

Answer:

a

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STATISTICS

The height of 20 students of a class (cm) are as given: 132,131,135,136,134,132,131,142,142,152,151,151,148,145,131,132,142,156,155,152. Arrange the data in the form of table of grouped data frequency distribution.

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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