Question

A group of 20 students recorded their heights in class the data received were as given below wath is the range​

Answer 1

Answer:

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Step-by-step explanation:

Minimum height =131cm

Maximum height =156cm

Range =156−131=25

Number of classes =4

Class range =  

$\frac{4}{25}$

​  

=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

Step-by-step explanation:

Minimum height =131cm

Maximum height =156cm

Range =156−131=25

Number of classes =4

Class range =  

​  

=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