NCERT Class 9 Solutions: Statistics (Chapter 14) Exercise 14.3-Part 1 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Q-1 A survey conducted by an organisation for the cause of illness and death among the women between the ages 15 − 44 (in years) worldwide, found the following figures (in %) :

Cause of Illness and Death Among Women
S. No.CausesFemale fatality rate (%)
1.Reproductive health conditions31.8
2.Neuropsychiatric conditions25.4
4.Cardiovascular Conditions4.3
5.Respiratory condition4.1
6.Other causes22.0
  1. Represent the information given above graphically.
  2. Which condition is the major cause of women՚s ill health and death worldwide?
  3. Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above being the major cause.

Solution (i) :

Let us,

  • Represent cause on x-axis and fatality on y-axis
  • Choose appropriate scale let us choose () .
  • With these specifications following graph can be drawn.
Chart Representing the Data

Solution (ii) :

  • Reproductive health conditions are the major cause of women՚s ill health and death worldwide and 31.8 % of women are affected by it.

Solution (iii)

It is unfortunate that in 21st centuary we still are not able to bring the health of women at par with men. With all the medial developments at disposal to our age, women still suffer the brunt of health problems only because they are biologically responsible for child birth. Some important factors are:

  • Lack of medical facilities, especially in remote and backward areas.
  • Lack of education among the rural poor, this ignorance forces them to still use age old methods of treatments.
  • Unequal social status of women, which leads to improper care and negligence on part of family members.

Q-2 The following data on the number of girls (to the nearest ten) per thousand boys in

Different sections of Indian society are given below.

Social Strata and Girl Child Ratio
SectionNumber of girls per thousand boys
Scheduled caste (SC)940
Scheduled tribe (ST)970
Non SC/ST920
Backward districts950
Non-backward districts920
  1. Represent the information above by a bar graph.
  2. In the classroom discuss what conclusions can be arrived at from the graph.

Solution (i) :

Below chart shows the number each of the various categories.

Chart Representing the Data

Solution (ii) :

Two things are very clear from the above

  1. The number of girls per 1000 children clearly reflects the preference for boys in the Indian society. We would have thought that urban areas would be better than rural areas, but number of girls per thousand boys is less in urban areas than rural areas.
  2. In fact, the numbers of girls to per thousand boys is maximum in scheduled tribes and minimum in urban section of the society.
  3. Again non SC/ST section of society does worse than SC/ST section in terms of girl child ratio.

Q-3 Given below are the seats won by different political parties in the polling outcome of a State assembly elections:

Political Parties vs. Seats
Political PartyABCDEF
Seats Won755537291037
  1. Draw a bar graph to represent the polling results.
  2. Which political party won the maximum number of seats?

Solution (I) :

let՚s choose the following:

  • On X-axis we categorize the political parties and on y-axis depict the seats won
  • Our scale is ( seats for y-axis)
  • Below is the graph for the above data
Chart Representing the Data

Solution (II) :

  • Clearly, political party ‘A’ won maximum number of seats.

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