What are types of errors usually occurred in surveys?
Answers: There are five main type of error which are usually occurred is the feild of survey sampling, these are
(i) Coverage error
(a) Under-Coverage
(b) Over-Coverage
(ii) Non-response error
(a) Item Non-response
(b) Unit Non-response
(iii) Measurement error
(a) Under esimate observations
(b) Over estimated the units
(iv) Processing error
(a) Editing the Data
(b) Coding or De-coding the collected information
(v) Sampling error
(a) Chose of wrong the selection technique
(b) Personal bias
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