What is the difference between primary data and secondary data?

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In research there are several methods used for data collection, which fall into two categories: primary data and secondary data. The difference between both are explained below:

Primary data:

Primary data is obtained for the first time by the researcher through direct efforts and their experience. Primary data can be...

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In research there are several methods used for data collection, which fall into two categories: primary data and secondary data. The difference between both are explained below:

Primary data:

Primary data is obtained for the first time by the researcher through direct efforts and their experience. Primary data can be collected through various sources like surveys, observations, experiments, questionnaires, personal interviews, telephone interviews, case studies, etc. Primary data collection is quite expensive, as the research is conducted by the organization itself, which requires huge investment. However, the data collection is under the direct control and supervision of the investigator specifically for the purpose of addressing their research problem.

Secondary Data:

Secondary data is the secondhand information or a third-party information which is already collected and recorded by persons other than the user. It is the readily available form of data collected from various sources like census, government publications, reports, books, journals, articles, websites, etc. Secondary data saves time and cost of the researcher since it is already available. But there are some disadvantages associated with this, as the objective and the method used for acquiring data may not be suitable to the current research problem. Therefore, before using secondary data, these factors should be kept in mind.

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