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Primary data refers to the first hand
data gathered by the researcher himself. Secondary data means data collected by
someone else earlier.
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Primary data is the type of data that is
collected by researchers directly from main sources while secondary data is the
data that has already been collected through primary sources and made readily
available for researchers to use for their own research.
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The secondary data made available to
researchers from existing sources are formerly primary data that was collected
for research in the past. The availability of secondary data is highly
dependent on the primary researcher's decision to share their data publicly or
not.
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primary data is collected from the main
source of data, while secondary data is not.