What is Undercoverage in a sample?
What is Undercoverage in a sample? Undercoverage occurs when an element of the target population is not represented on the survey frame and therefore not given any chance of selection in the survey sample; that is, the element has zero probability of selection into the sample. What is an example of non-response bias? Non-response bias is a type of bias that occurs when people are unwilling or unable to respond to a survey due to a factor that makes them differ greatly from people who respond. For example, a survey asking about the best alcoholic drink brand targeted at older...