Download - Data Collection Amit Rathi
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Data Collection
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Secondary Data
Secondary data is the data that have been
already collected by and readily available fromother sources. Such data are cheaper and morequickly obtainable than the primary data andalso may be available when primary data can not
be obtained at all.
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Advantages
It is economical. It saves efforts and expenses. It is time saving. It helps to make primary data collection more
specific since with the help of secondary data, we areable to make out what are the gaps and deficienciesand what additional information needs to be
collected. It helps to improve the understanding of the
problem. It provides a basis for comparison for the data that
is collected by the researcher.
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Disadvantages
Unit of secondary data collection-Suppose you
want information on disposable income, but thedata is available on gross income. Theinformation may not be same as we require.
Accuracy of secondary data is not known.
Data may be outdated. Class Boundaries may be different.
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Evaluation
Availability- It has to be seen that the kind of
data you want is available or not. If it is notavailable then you have to go for primary data.
Relevance- It should be meeting therequirements of the problem. For this we have
two criterion:- Units of measurement should be the same.
Concepts used must be same and currency of datashould not be outdated.
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Continued
Accuracy- In order to find how accurate the
data is, the following points must be considered: Specification and methodology used;
Margin of error should be examined;
The dependability of the source must be seen.
Sufficiency-Adequate data should beavailable.
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Sources
Internal Sources -
Accounting Records Sales Force Reports
Miscellaneous Reports
Internal Experts
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Continued
External Sources
Federal government Provincial/state governments
Statistics agencies
Trade associations
General business publications
Magazine and newspaper articles
Annual reports
Academic publications
Library sources
Computerized bibliographies
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Primary Data
Primary data are those data which are collected
for the first time, taking a sample, representing apopulation. It is not a published data, it isproblem specific data collected by theresearcher, first time. When primary data is
published by researcher, it becomes thesecondary data for everybody, other than theresearcher.
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Sources
questionnaires interviews focus group interviews observation case-studies
diaries critical incidents portfolios.
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Difference
Primary Data Secondary Data
Needs more funds.
Investigating Agency collectsthe data.
Requires longer time forcollection
More reliable and suitable to
the enquiry because theinvestigator himself collects it.
Needs comparatively lessfunds.
Some other investigatingagency collects it for its ownuse.
Requires less time for
collection. Less reliable and suitable as
someone else has done that jobof collection which may notserve the purpose.
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Continued
Primary Data Secondary Data
Requires elaborateorganization.
No extra precautions arerequired
No need of any organizationalset up.
Secondary data need morecare and attention.
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Thank You