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The word data means information or a set of given facts.

  • Types of Data
  • Primary Data

When an investigator collects data himself with a definite plan or purpose in his (her) mind, it is called primary data. e.g. Data obtained by the office of the registrar general and census commissioner for populations census are called primary data.

Secondary Data :-

Data which are not originally collected but obtained from published or unpublished sources are called secondary data.

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