Collection and Presentation of Data — Chapter Summary
NIOS · Class 10 · Economics
Summary of Collection and Presentation of Data for NIOS Class 10 Economics. Part of the NIOS Class 10 Economics syllabus.
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Overview
Data means quantitative information providing facts in an aggregate manner. It is used in economics because decisions, planning, and policy formation depend on facts expressed in numbers. Data are not a single fact; they become meaningful only when facts are collected together, arranged, classified,
Key Concepts
Data means quantitative information providing facts
Data means quantitative information providing facts in an aggregate manner. The singular of data is datum. A single fact is not data because data must
Primary data are data originally collected
Primary data are data originally collected for the first time for the purpose of a survey. They are collected directly by the investigator.
Secondary data are data already collected
Secondary data are data already collected by others and reused. The same data can be primary for the first collecting agency and secondary for all oth
The investigator is the person who
The investigator is the person who collects information personally. The respondent is the person who gives answers to the investigator.
A variable is data that can
A variable is data that can be classified in the magnitude of time or size. Examples include height, weight, length, and distance. A variable may be d
Learning Objectives
- Understand the meaning and features of data
- Distinguish between primary data and secondary data
- Differentiate between variables and attributes
- Classify data into individual, discrete, and continuous series
- Understand basic methods of collecting primary data
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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