Answer
Non sampling errors are the errors that occur in the collection, recording, and tabulation of data. The non sampling errors can occur both in a sample survey and in a census. For example, the inability to obtain information about all cases in the sample, definition difficulties, differences in the interpretation of questions and inability or unwillingness on the part of the respondents to provide correct information can create errors.
Work Step by Step
Non sampling errors are the errors that occur in the collection, recording, and tabulation of data. The non sampling errors can occur both in a sample survey and in a census. For example, the inability to obtain information about all cases in the sample, definition difficulties, differences in the interpretation of questions and inability or unwillingness on the part of the respondents to provide correct information can create errors.