ERRORS IN SURVEY RESERACH

BY:Mahima Nigam (11BSPHH010446)AitrayeeAnuj sood

THE NATURE OF SURVEYS

• Survey: Method of Gathering primary data.• Respondents: Who answers interviewer’s

questions.• Sample Survey: purspose of contacting

respondents.• Primary Data: Gathered and assembled for

research project in hand.

Errors in survey researchTotal error

Random sampling error

Random sampling error: Difference between the result of a sample and the result of a census conducted using identical procedures.

Systematic error: Due to imperfect aspect of research design or mistake in execution of research.

Sample bias: when the results of sample show a persistent tendency to deviate in one direction.

Respondent errorResponse

biasDeliberate falsification

Unconscious misrepresentation

Non-response error

Respondent error:Non response error: statistical difference

between those who answered and those who did not. Response bias: when respondent consciously or

unconsciously misinterpret the truth. Acquiescence biasExtremity biasInterviewer’s biasAuspices biasSocial desirability bias

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