Question
Distinguish between Primary data and secondary data.
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S. No.
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Primary data
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Secondary data
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1.
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Primary data are those data which are collected from the primary sources.
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Secondary data are those data which are collected from the secondary sources.
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2.
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Primary data are known as basic data.
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Secondary data are known as subsidiary data.
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3.
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The collection of primary data is more expensive.
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The collection of secondary data is comparatively less expensive.
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4.
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It takes more time to collect the data.
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It takes less time to collect the data.
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5.
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Primary data are more accurate.
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Secondary data are less accurate than the primary data.
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6.
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Primary data are known as first hand data.
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Secondary data are known as second hand data.
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7.
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Primary data are not readily available.
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Subsidiary data are readily available.
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8.
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It is required to take much care at the time of collecting data.
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It is not required to take much care at the time of collecting data.
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| Income: | 100 | 200 | 400 | 500 | 800 |
| No. of Persons: | 80 | 70 | 50 | 30 | 20 |
| X | Frequency |
| 12 | 8 |
| 18 | 12 |
| 25 | 15 |
| 35 | 23 |
| 47 | 16 |
| 55 | 18 |
| 62 | 31 |
| 75 | 12 |
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Subject:
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English
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Histoty
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Economics
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Maths
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Geogtaphy
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Marks:
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60
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75
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80
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95
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80
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| Class Interval: | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 | 80-90 |
| Frequency: | 2 | 6 | 12 | 18 | 25 | 20 | 10 | 7 |