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Graphical Representation Of Data
What are the salient features of a flow map?
Salient Feature of a flow map: Flow map convey the idea of movement. Hence they are constructed to show movement or flow of buses, trains and other means of transport. They also show the flow of water in the rivers and movement of men and material. The following two features are important in a flow map :
1. The direction of flow.
2. Number or quantity of vehicles, people, commodities etc. from a place to another.
3. A map of the selected area showing transport routes and important places is drawn.
4. Datas to be shown on map are compiled.
5. A suitable scale is selected to represent the number or quantity by thickness of the line proportionate to the number or quantity to be shown.
Tips: -
V. Imp.
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Describe the method of constructing a traffic flow map.
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.
Represent the following data by suitable. The rural and urban population of India diagram:
|
Year |
Rural |
Urban |
|
Polpulation (%) |
Population (%) |
|
|
1901 |
29.2 |
10.8 |
|
1911 |
89.7 |
10.3 |
|
1921 |
88.8 |
11.2 |
|
1931 |
88.0 |
12.0 |
|
1941 |
86.1 |
13.9 |
|
1951 |
82.7 |
17.3 |
|
1961 |
82 |
18.0 |
|
1971 |
80.1 |
19.9 |
|
1981 |
76.7 |
23.3 |
|
1991 |
74.3 |
25.7 |
What are the salient features of a flow map?
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