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Revision Notes

Collection and Presentation of Data

NIOS · Class 10 · Economics

Quick revision notes for Collection and Presentation of Data — NIOS Class 10 Economics. Key concepts, formulas, and definitions for last-minute revision.

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Key Topics to Revise

1

Meaning and Features of Data

  • Data is quantitative information giving facts in aggregate form.
  • A single fact is not data; data requires an aggregate of facts.
  • Data is always numerical in nature; qualitative words like good, bad, beautiful, or handsome are attributes, not data.
2

Importance of Data in Economics

  • Data are essential in economic planning because past data help prepare future plans.
  • Data are used to determine national income and understand the state of the economy.
  • Government policies are often based on statistical data about poverty, unemployment, population, and literacy.
3

Types of Data and Methods of Collection

  • Data are classified into primary data and secondary data on the basis of source of collection.
  • Primary data are originally collected for the first time for the purpose of the survey.
  • Secondary data are already collected by others and reused.
4

Classification, Variables, Attributes, and Statistical Series

  • Classification is the process of arranging data into classes or groups according to resemblances and affinities.
  • Mass data in original form is called raw data.
  • A variable is data capable of being classified in magnitude of time or size.

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Full Notes

Key Concepts

Data means quantitative information providing factsPrimary data are data originally collectedSecondary data are data already collectedThe investigator is the person whoA variable is data that can

Frequently Asked Questions

What are the important topics in Collection and Presentation of Data for NIOS Class 10 Economics?
Collection and Presentation of Data covers several key topics that are frequently asked in NIOS Class 10 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 and Presentation of Data — NIOS Class 10 Economics?
Understand the core concepts first, then work through the 44 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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