This document discusses secondary data - data originally collected by someone other than the user. It defines secondary data and lists common sources like censuses and government/organizational records. The purposes of secondary data are extracting relevant information, fact finding, model building, and data mining. Criteria for evaluating secondary data include specifications, error, currency, objectives, nature, and dependability. Secondary data is advantageous as it is economical, time saving, and helps focus primary data collection. However, disadvantages are that secondary data may not fit the research factors and accuracy is unknown. Secondary data can be used to identify problems, better define problems, develop research approaches, formulate research designs, and help interpret primary data.
What is secondarydata?
It refers to data that that was collected by
someone other than the user. Common
sources of secondary data for social science
include censuses, information collected by
government dept’s, organisational records
and data that was originally collected for
other research purposes.
4.
PURPOSE OF SECONDARYDATA
•Extracting the relevant information from other
sources, previous studies.
•Fact findings: descriptive information to support
research
•Model building: specifying relationship between
two or more variables
•Data mining: exploring data through computer.
Using computer technology to go through volumes
of data to discover trends about an organisation’s
sales customers and products
7.
CRITERIA FOR EVALUATINGSECONDARY DATA
•Specifications: methodology used to collect the
data.
•Error: accuracy of the data
•Currency: when the data were collected
•Objectives: the purpose for which the data were
collected
•Nature: the content of the data
•Dependability: overall, how dependable are the
data
8.
ADVANTGES OF SECONDARYDATA
It is economical. It saves efforts & expenses.
It is time saving.
It helps to make primary data collection more
specific since with the help of secondary data.
It helps to improve the understanding of the
problem.
It provides a basis for comparison for the data
that is collected by the researcher.
9.
DISADVANTAGES OF SECONDARYDATA
Secondary data is something that seldom
fits in the frame work of marketing research
factors. Reasons for its non fitting are-
a) Unit of secondary data collection- suppose
you want information on disposable income,
but the data is available on gross income. The
information may not be same as we require.
Accuracy of secondary data is not known.
Data may be outdated(one can only hope
that the data is of good quality).
10.
USES OF SECONDARYDATA
•Identify the problem
•Better define the problem
•Develop an approach to the problem
•Formulate an appropriate research design
•Answer certain research questions and test
some hypothesis
•Interpret primary data more insightfully