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Presentation of Data
Suppose you want to emphasise the increase in the share of urban non-workers and lower level of urbanisation in India as shown in Example 4.2. How would you do it in the tabular form?
Increase in the share of urban non-workers:
|
Years |
No. of urban non-workers (in percentage) |
|
2001 |
20 |
|
2002 |
22 |
|
2003 |
20.4 |
|
2004 |
21 |
|
2005 |
22.3 |
|
2006 |
21.5 |
Lower level of urbanisation (in percentage)
|
Years |
Rates of persons migrating from other states to metros |
|
2001 |
18 |
|
2002 |
20 |
|
2003 |
22 |
|
2004 |
23 |
|
2005 |
22.8 |
|
2006 |
22.9 |
Alternatively : (Increase in the share of urban non-workers (for the state of Delhi) :
(in percentage)
|
2001 |
2006 |
|
|
Worker Non-worker |
60 40 |
59.4 40.6 |
(Note : arbitrary figures have been taken.)
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Data represented through a histogram can help in finding graphically the:
Ogives can be helpful in locating graphically the:
Data represented through arithmetic line graph help in understanding:
Width of bars in a bar diagram need not be equal.
Width of rectangles in a histogram should essentially be equal.
Histogram can only be formed with continuous classification of data.
Histogram and column diagram are the same method of presentaton of data.
Mode of a frequency distribution can be known graphically with the help of histogram.
Median of a frequency distribution cannot be known from the ogives.
What kind of diagrams are more effective in representing the following:
(i) Monthly rainfall in a year.
(ii) Composition of the population of Delhi by religion.
(iii) Components of cost in a factory.
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