Class 9 Maths

# Statistics

## Exercise 14.3

### Part 1

Question 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 %):

CausesFemale fatality rate (%)
Reproductive health conditions31.8
Neuropsychiatric conditions25.4
Injuries12.4
Cardiovascular conditions4.3
Respiratory conditions4.1
Other causes22.0

(i) Represent the information given above graphically.

(ii) Which condition is the major cause of womenâ€™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.

Answer: Lack of awareness, lack of timely medical care, lack of hygiene

Question 2: The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below.

SectionNumber of girls per thousand boys
Scheduled Caste (SC)940
Scheduled Tribe (ST)970
Non SC/ST920
Backward Districts950
Non-backward Districts920
Rural930
Urban910

(i) Represent the information above by a bar graph.

(ii) In the classroom discuss what conclusions can be arrived at from the graph.

1. Scheduled tribes show better sex ratio.
2. Backward districts show better sex ratio.
3. Sex ratio is better in rural areas than in urban areas.

Question 3: Given below are the seats won by different political parties in the polling outcome of a state assembly elections:

 Political Party Seats Won A B C D E F 75 55 37 29 10 37

(i) Draw a bar graph to represent the polling results.