Question

Q1.A group of 20 students recorded their heights (in cm). The data received were as given below.
150, 120, 112, 160, 155, 151, 158, 142, 148, 149, 161, 165, 140, 157, 156, 146,148, 153, 138,135.
Make a frequency table using tally marks taking width of the class as 5 and draw a
histogram for the given data.

Answer 1

Step-by-step explanation:

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