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What is Collection of Data about?
The document discusses the collection of data in statistics, outlining primary and secondary sources, along with their types and methods. It details various methods for collecting primary data, such as direct personal investigation, indirect oral investigation, and the use of questionnaires, highlighting their merits and demerits. Additionally, it covers secondary data sources, including published and unpublished materials, and emphasizes the importance of accuracy and suitability in data collection.
- Author
- Preeti Walia
- Language
- EN