The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below:

(i) Represent the information above by a bar graph.
(ii) In the classroom discuss what conclusions can be arrived at from the graph.

Solution:

(i) The above data can be represented on a bar graph as below:

1. Represent the ‘section’ on the x-axis and the number of girls per thousand boys on the y-axis.
2. We will select a scale of 1 unit = 100 girls for the y-axis as the max value does not exceed 1000.
3. We will maintain equal width for all the bars on the  x-axis and also maintain equal gaps in between the bars.

Point to note:

1. The values variations occur mostly in the range of 900-970.
2. The values are the same until 900.
3. Hence to make the variations more visible and distinct and for a better study of the graph, we can keep the starting value on the y-axis as ‘900’ with a scale of 1 unit as ‘10’ and reconstruct the graph.

As we can see, the above graph shows a clear image of the data and helps us to arrive at conclusions easily.

(ii) It can be observed from the graph that:

1. The number of girls per thousand boys represented in the graph is maximum for Scheduled Tribe (ST).
2. The number of girls per thousand boys represented in the graph is lowest for urban.
3. The number of girls per thousand boys are higher in rural area than in urban.
4. The number of girls per thousand boys are also higher in backward districts than in non-backwards.

☛ Check: Class 9 Maths NCERT Solutions Chapter 14

Video Solution:

The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below. (i) Represent the information above by a bar graph. (ii) In the classroom discuss what conclusions can be arrived at from the graph.

NCERT Solutions for Class 9 Maths Chapter 14 Exercise 14.3 Question 2

Summary:

We are given the number of girls (to the nearest ten) per thousand boys in different sections of Indian society. The information is represented using a bar graph. We have found that there the variations in values occur mostly in the range of 900-970.The number of girls per thousand boys represented in the graph is maximum for Scheduled Tribe (ST), the number of girls per thousand boys represented in the graph is lowest for urban, the number of girls per thousand boys are higher in rural area than in urban, the number of girls per thousand boys are also higher in backward districts than in non-backwards.

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