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Graphical Representation Of Data
Describe and illustrate important steps to be followed in preparing a choropleth map.
The following steps are to be followed in preparing a choropleth map:
1. Arrange the data in ascending or descending order.
2. Group the data in five categories to represent very high, high, medium, low and very low.
3. The interval between the categories may be identified on the following formula i.e., range/ 5 and range = Maximum value-Minimum value.
4. Patterns, shades or color to be used to depict the choosen categories should be marked in an increasing or decreasing order.
Some More Questions From Graphical Representation Of Data Chapter
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
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
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
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.
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
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
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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