3. Number of children in six different classes are given below Represent the data on a
bar graph
Class
Sixth Seventh oth Ninth Tenth
Number of Children
120
(a) How would you choose a scale?
(b) Answer the following questions:
( Which class has the maximum number of children? And the minimum?
(1) Find the ratio of students of class sixth to the students of class eight.
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Answer:
6.5
Step-by-step explanation:
We have taken a scale of
1cm = 10 students
Because it suits the interval very well.
b) i) Maximum = 5th and Minimum = 10th
ii) No of students in grade 6th = 120
No of students in grade 8th = 100
Ratio = \frac{120}{100}\ =\ \frac{6}{5}
100
120
=
5
6
= 6:5
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