As we have already seen, there are a lot of differences in the methods of collecting Primary and Secondary data.
Choice
Between Primary and Secondary Data:
As we have already seen, there
are a lot of differences in the methods of collecting Primary and Secondary
data. Primary data which is to be collected originally involves an entire
scheme of plan starting with the definitions of various terms used, units to be
employed, type of enquiry to be conducted, extent of accuracy aimed at etc. For
the collection of secondary data, a mere compilation of the existing data would
be sufficient. A proper choice between the type of data needed for any
particular statistical investigation is to be made after taking into
consideration the nature, objective and scope of the enquiry; the time and the
finances at the disposal of the agency; the degree of precision aimed at and
the status of the agency (whether government- state or central-or private
institution of an individual).
In using the secondary data, it
is best to obtain the data from the primary source as far as possible. By doing
so, we would at least save ourselves from the errors of transcription which
might have inadvertently crept in the secondary source. Moreover, the primary
source will also provide us with detailed discussion about the terminology
used, statistical units employed, size of the sample and the technique of
sampling (if sampling method was used), methods of data collection and analysis
of results and we can ascertain ourselves if these would suit our purpose. Now-a-days in a large number of
statistical enquiries, secondary data are generally used because fairly
reliable published data on a large number of diverse fields are now available
in the publications of governments, private organizations and research
institutions, agencies, periodicals and magazines etc. In fact, primary data
are collected only if there do not exist any secondary data suited to the investigation
under study. In some of the investigations both primary as well as secondary
data may be used.
Tags : Research Methodology - Data Collection & Sources Of Data
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