Study Materials

# NCERT Solutions for Class 9th Mathematics

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## Chapter 14. Statistics

### Exercise 14.3

EXERCISE 14.3

Q1. 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 %):

 S.No. Causes Female fatality rate (%) 1.  2.  3.  4.  5.  6. Reproductive health conditions  Neuropsychiatric conditions  Injuries  Cardiovascular conditions  Respiratory conditions  Other causes 31.8  25.4   12.4   4.3   4.1   22.0

(i) Represent the information given above graphically.
(ii) Which condition is the major cause of women’s ill health and death worldwide?
(iii) 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) These data can be represented graphically using bar-graph. By representing cause on x-axis family fatality rate on y-axis.

Q2. The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below

 Section Number of girls per thousand boys Scheduled Caste (SC)  Scheduled Tribe (ST)  Non SC/ST  Backward districts  Non-backward districts  Rural  Urban 940  970  920  950  920  930  910

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

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