Question

Solve the following questions in the provided space.
1. Height (in cm) of 20 students in a class is given as follows. Prepon
cumulative frequency distribution table of 'More than or equal to typ
135, 152, 150, 145, 140, 137, 142, 152, 141, 151,
143, 139, 154, 144, 138, 152, 150, 155, 145, 146
Take classes
135-140, 140-145​

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