Question
Differentiate between census survey and sample survey.
|
S. No.
|
Basis
|
Census Survey
|
Sample Survey
|
|
1.
|
Coverage
|
The whole universe is taken for collection of data in census survey.
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Only representative sample is taken for collection of data in sample survey.
|
|
2.
|
Suitability
|
This method is suitable when the area under investigation is relatively small.
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This method is suitable when the area under investigation is large.
|
|
3.
|
Accuracy
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Since, all items are studied under census survey, highest degree of accuracy is possible.
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Since only representative samples are studied under sample survey, it is less accurate.
|
|
4.
|
Time
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Census survey is very time consuming as all items are studied.
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Sample survey is less time consuming as only samples are studied.
|
|
5.
|
Nature of Items
|
Census survey is suitable when items in the universe have diverse characteristics.
|
Sample survey is suitable when items in the universe are homogeneous.
|
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|
Number of Days Absent
|
Number of Students
|
|
Less than 5
|
29
|
|
Less than 10
|
224
|
|
Less than 15
|
465
|
|
Less than 20
|
582
|
|
Less than 25
|
634
|
|
Less than 30
|
644
|
|
Less than 35
|
650
|
|
Less than 40
|
653
|
|
Less than 45
|
655
|
| Price (₹) | Demand of Rahul (Units) | Demand of Rohan (Units) | Demand of Rohit (Units) |
| 1 | 7 | 10 | 12 |
| 2 | 6 | 8 | 9 |
| 3 | 5 | 6 | 7 |
| 4 | 4 | 4 | 5 |
| 5 | 3 | 2 | 3 |
|
Profit per retail shop (in ₹)
|
0-10
|
10-20
|
20-30
|
30-40
|
40-50
|
50-60
|
|
Number of retail shops
|
12
|
18
|
27
|
-
|
17
|
6
|
| More than: | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
| Cumulative Frequency: | 100 | 90 | 75 | 50 | 20 | 10 | 5 | 0 |