What is Sampling Error?
Sampling error is the variation
between true mean value for the population and the true mean value of the
sample.
Non-sampling Error:
Non-sampling error can be attributed
to sources other than sampling and they may be random or non-random.
Non-response Error:
Non-response error arises when some
of the respondent included in the sample does not respond.
Response Error
Response error arises when respondent give inaccurate
answer or their answers are misreported
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