Ex 3.3, 3 Number of children in six different classes are given below. Represent the data on a bar graph.
Since number of children are from
80 to 135
We draw a bar graph from 0 to 140. With a gap of 10
(a) How would you choose a scale?
Here, Since number of children are from 80 to 135
We draw a bar graph from 0 to 140,
with a gap of 10
So, scale is
1 unit length = 1 students
Ex 3.3, 3 (b) (i) Which class has the maximum number of children ? And the minimum
Highest bar is of class 5th
So, Maximum number of children are from Class 5th
Lowest bar is of class 10th
So, Minimum number of children are from Class 10th
Ex 3.3, 3 (b) (ii) Find the ratio of students of class sixth to the students of class eight.Number of students in class 6th = 120
Number of students in class 6th = 120
Ratio = 120/100
So, ratio is 12 : 10

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.