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Primary and secondary data |
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Primary and secondary data.
Statistics can be classified as
primary data and secondary data. The ‘Primary data’ refers to that data which the investigator produces
himself for the purpose of enquiry in hand. For example, if it is
desired to conduct an enquiry about the wages of workers in a certain mill in
Mumbay and data pertaining to this enquiry are collected by the investigator
from the workers, then such data would be termed as primary data.
The term secondary
data, on the other hand, refers to statistical data which do not
originate from the investigator himself but is obtained from someone else’s records. Thus, if
instead of obtaining data from the workers, investigator gets the data from records of the mill or
trade union office then data will be termed as secondary data. In other words, when primary data are
utilised for any other purpose or for the same purpose at some subsequent enquiry, it is
termed as secondary data.
1.High
degree of accuracy.
2.1t does not require extra caution regarding suitability,
adequacy and reliability.
3.A
primary data shows data in greater
detail.
4. The primary source frequently includes
definitions of various terms are units used there in.
5. For some investigators, secondary data are not available at all.
Demerits of primary data.
1.Collection of primary data requires a lot of time . 2.Collection of primary data requires a lot of funds .
3.Collection of primary data requires a lot
of labour and time.
4. Collection of primary data requires high degree of skill.
5. In some enquiries it is not possible to collect primary data.
Merits of secondary data;
1. Use
of secondary data saves
funds.
2. Use
of secondary data saves
time and labour .
3. It is convenient to use secondary data.
4. In some enquiries, primary data cannot be
collected. .
Demerits of secondary data;
1.Degree of accuracy is not high as compared to that of primary data.
2.we have to be extra cautions while using secondary
data. 3.secondary are not available for all types of enquries.
4. It is not easy to find secondary data
which exactly fit the need
of the present investigation.
5. It is not easy to find secondary data
which are sufficiently accurate.
6. We have to be extra cautious while using
secondary data.
7. Secondary data are not available for all types of enquiries.
DIFFERENCE BETWEEN PRIMARY AND
SECONDARY DATA
1. Primary data are very much original. The
investigator himself collects the figures, On the other hand, secondary data
are not original. Someone collects the data and someone else uses it.
2. In the collection of
primary data more capital is required, more labour is required because they are
very much original. Secondary data are already collected data.
3. Primary data are
collected according to the
wishes of the researcher but the aim is different while collecting
secondary data.
4. Primary data are more suitable to the
purpose of enquiry in
hand. Secondary data are less suitable to the purpose of energy in hand
as these are collected for some
other purpose of some other enquiry.
5. Use of primary data does not require much
caution. Use of secondary
data requires a lot of caution.
6. Primary data are collected from statistical units.
Secondary data are not collected from statistical units but from different publications or from different agencies or
from different researchers.
7. There is the possibility of personal prejudices in
the collection of primary data but this is not possible in secondary data.
8. The information obtained through the
collection of primary data is likely to be more accurate than that of secondary data.
Examples of secondary data include:
. Journal articles that comment on or
analyse research.
.
textbooks.
.
dictionaries and encyclopaedias.
.
books that interpret, analyse.
. political
commentary.
.
biographies. dissertations.
.newspaper
Examples of primary data include:
.Surveys
.observations
.experiments
.questionnaries
.interviews.
3.Youtube:-
https://www.youtube.com/channel/UCmHEwsZ6gQFgZKSggCFUWgQ
https://youtube.com/playlist?list=PLkZAuGqMmH3rLRbadg4k1gmA6SR_KgeXW
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