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Graphical Representation Of Data
Discuss important steps to represent data with the help of pie-diagram.
Important steps:
1. Arrange the data in an ascending order.
2. Calculate the degrees of angles showing the given values.
3. Plot the data dividing the circle into the required number of divisions.
4. Select a suitable radius for the circle to be drawn.
5. Draw a line from the centre of the circle to the arc as a radius.
6. Measure the angles from the arc of the circle for each category of vehicle in an ascending order clockwise starting with smaller angle.
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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.
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?
What are the points to be kept in mind while using dot method?
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