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Chapter 2 discusses the collection of data, defining key terms such as variables, attributes, and data sources, which include internal and external sources. It differentiates between primary and secondary data, outlines survey methods and questionnaire design, and explains various data collection techniques like personal interviews, mailing questionnaires, and telephone interviews. The chapter also covers sampling methods, census vs. sample surveys, and the concepts of sampling errors and non-sampling error

Author

arunodayshankar

Language

EN