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Data – Its Source and Compilation — Revision Notes

CBSE · Class 12 · Geography

Data – Its Source and Compilation revision notes for CBSE Class 12 Geography: 4 topics in quick points. Part of the CBSE Class 12 Geography syllabus.

59 questions72 flashcards5 concepts

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Key Topics to Revise

1

1. Meaning and Need of Data

  • Data are numbers that represent measurements from the real world.
  • A single measurement is called a datum.
  • Information becomes meaningful only when data are organised and interpreted properly.
2

2. Presentation of Data and Statistical Fallacy

  • The way data are presented is as important as collecting them.
  • Averages can sometimes hide the real situation.
  • The chapter gives the example of river depth: the average depth may look safe, but one deeper point can still cause danger.
3

3. Sources of Data

  • Data are collected from two main sources: primary and secondary.
  • Primary data are collected for the first time by an individual, group or institution.
  • Secondary data are collected from published or unpublished sources.
4

4. Methods of Collecting Primary Data

  • Personal observation means collecting information directly by observing in the field.
  • Field survey can give information about relief, drainage, soil, natural vegetation, population structure, sex ratio, literacy, transport, communication and settlements.
  • The observer should have theoretical knowledge and a scientific attitude for unbiased evaluation.

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Full Notes

Key Concepts

Data are numbers representing realPrimary sources are data collectedSecondary sources are data collected fromA questionnaire is filled in byA statistical table is a systematic

Frequently Asked Questions

What are the important topics in Data – Its Source and Compilation for CBSE Class 12 Geography?
Key topics in Data – Its Source and Compilation include Meaning and Need of Data, Presentation of Data and Statistical Fallacy, Sources of Data, Methods of Collecting Primary Data. Study these first, then practise questions on each for the CBSE Class 12 board exam.
How should I revise Data – Its Source and Compilation for the CBSE Class 12 board exam?
Learn the core ideas first, then work through the 59 practice questions on Data – Its Source and Compilation. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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