METHODS OF DATA COLLECTION
CONCEPT OF SAMPLING AND OTHER CONCEPTS RELATED TO SAMPLING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Response Bias
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Undercoverage
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Nonresponse
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Voluntary Response
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Detailed explanation-1: -A more serious source of bias in most sample surveys is nonresponse, which occurs when a selected individual cannot be contacted or refuses to cooperate. Undercoverage occurs when some groups in the population are left out of the process of choosing the sample.
Detailed explanation-2: -Nonresponse bias occurs when survey participants are unwilling or unable to respond to a survey question or an entire survey. Reasons for nonresponse vary from person to person. To be considered a form of bias a source of error must be systematic in nature. Nonresponse bias is not an exception to this rule.
Detailed explanation-3: -Self-selection bias (also called volunteer bias) refers to the bias that can occur when individuals are allowed to choose whether they want to participate in a research study.