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Graphical Representation Of Data

Question
CBSEENGE12024905
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Draw a dot map of Haryana to show the distribution of population on the basis of data given below.

Distribution of Population in Haryana in 2001 :

S.No.

Names of the Districts

Population

1.

Faridabad

21, 93, 276

2.

Gurgaon

16,57,669

3.

Hisar

15,36,417

4.

Bhiwani

14,24,554

5.

Sonepat

12,78,830

6.

Karnal

12,74,843

7.

Jind

11,89,725

8.

Sirsa

11,11,012

9.

Ambala

10,13,660

10.

Yamunanagar

9,82,369

11.

Panipat

9,67,338

12.

Kaithal

9,45,631

13.

Rohtak

9,40,036

14.

Jhajjar

8,87,392

15.

Kurukshetra

8,28,120

16.

Mahendragarh

8,12,022

17.

Fatehabad

8,06,158

18.

Rewari

7,64,727

19.

Panchkula

4,69,210

Haryana

2,10,82,989

Source: Census of India 2001, Haryana, Provisional Population Tables Paper 1, p40.

Solution

Since the data are available according to districts, we must have an outline map of Haryana on which boundaries of all the 19 districts are drawn. Taking into consideration the size of the districts and their population figures, fix the value of each dot. Supposing each dot represents a population of 20,000. The number of dots to be put in each district is calculated by dividing total population by the fixed value of dot. The calculation of number of dots in each district is done according to the following table. If the number of dots is in decimals or fractions, they are to be converted into whole numbers.

Calculate the number of dots required for each district when each dot represents 20,000 persons. For example, the dots for Faridabad district will be 219376 % 20,000 = 109.66 round to 110 dots. Similarly calculate the number of dots for each district. On the outline map of Haryana mark the towns and cities and negative areas with pencil. Put more dots near towns and cities and leave out negative areas. Size of the dots should be suitably selected, so that they don't look either too crowded or too sparsely distributed. The size of the dots should remain the same at every spot.

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What is an isopleth map? How an interpolation is carried out?

Describe and illustrate important steps to be followed in preparing a choropleth map.

Discuss important steps to represent data with the help of pie-diagram.

Represent the following data with the help of suitable diagram:

Year

1911

1921

1931

1941

1951

1961

1971

1981

1991

2001

Decimal Growth (%)

0.35

8.27

19.12

31.97

41.42

26.41

38.23

46.14

36.47

31.13

Represent the following data with the help of suitable diagram:

India: Literacy and Enrolment Ratio in Primary and Upper Primary Schools

Year

Literacy Ratio

Enrolment

Enrolment Ratio
       

Ratio Primary

Upper Primary
 

Person

Male

Female

Boys

Girls

Total

Boys

Girls

Total

1950-51

18.3

27.2

8.86

60.6

25

42.6

20.6

4.6

12.7

1999-2000

65.4

75.8

54.2

104

85

94.9

67.2

50

58.8

Represent the following data with the help of a pie-diagram:

Land-use: 1983–84

 

1950-51

1998-2001

Net Sown Area

42

46

Forest

14

22

Not available for cultivation

17

14

Fallow Land

10

8

Pasture and Tree

9

5

Culturable Waste Land

8

5

Study the table given below and the given diagrams/maps.

Area and Production of Rice in major States

States

Area in 000 ha

% to Total Area

Production in 000 tones

% to Total Production

West Bengal

5,435

12.3

12,428

14.6

Uttar Pradesh

5,839

13.2

11540

13.6

Andhra Pradesh

4,028

9.1

12428

13.5

Punjab

2,611

5.9

9154

10.8

Tamil Nadu

2,113

4.8

7218

8.5

Bihar

3,671

8.3

5417

6.4

(i) Construct a multiple bar diagram to show area under rice in each state.

(ii) Construct a pie diagram to show the percentange of area under rice in each state.

(iii) Construct a dot map to show the production of rice in each state.

(iv) Construct a choropleth map to show the percentage of production of rice in states.

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