A self-addressed and stamped envelope should be enclosed with a questionnaire is called
Data collected from the original source of information is called
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A sample which is capable of providing reasonably accurate information about the population at a much lower cost and shorter time is known as
The subject that helps in analysing economic problems and formulating policies to solve them is
The population divided into several homogeneous groups is called
In case the interviewer is unable to contact a person, it is called
Dividing population into several homogeneous groups for data collection is called
The data obtained from the records of an organisation is called
198 videos|165 docs|152 tests
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198 videos|165 docs|152 tests
|