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Revision Notes

Collection of Data

ICSE · Class 11 · Economics

Quick revision notes for Collection of Data — ICSE Class 11 Economics. Key concepts, formulas, and definitions for last-minute revision.

65 questions38 flashcards5 concepts

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Key Topics to Revise

1

1. Primary and Secondary Data

  • Primary data are original, first-hand data collected for the first time for a specified purpose.
  • Secondary data are data collected by someone else and used by another person.
  • Published data are necessarily secondary data.
2

2. Sources of Data

  • There are two main sources of data: internal sources and external sources.
  • Internal data come from internal reports and records of an organisation.
  • Internal data are under the control of the business.
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3. Methods of Collecting Primary Data

  • Primary data can be collected by five methods: direct personal investigation, indirect oral investigation, information through correspondents, mailed questionnaire, and questionnaire through personal
  • Telephone interviews are cheaper and quicker than personal interviews but depend on telephone availability.
  • Direct personal investigation means the investigator goes to the field and collects data personally.
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4. Essentials of a Good Questionnaire

  • A good questionnaire is a key instrument for collecting primary data from many persons.
  • It should have a covering letter that explains the purpose of the survey.
  • Questions should be simple, short, and clearly worded.

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Full Notes

Key Concepts

Primary data are originalSecondary data are data collected byInternal data are obtained fromExternal data are collected from outsideCensus method means studying every unit

Frequently Asked Questions

What are the important topics in Collection of Data for ICSE Class 11 Economics?
Collection of Data covers several key topics that are frequently asked in ICSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Collection of Data — ICSE Class 11 Economics?
Understand the core concepts first, then work through the 65 practice questions available for this chapter. Revise formulas and 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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