Which of the following is a common problem that can bias what appears to be a random sample?
A) An incomplete sampling frame
B) Attrition
C) Non-responsiveness
D) Both a and c
E) All of the above

Question

Quizplus · Accepted Answer

An incomplete sampling frame can lead to a biased sample because some individuals or units in the population may be excluded from the sampling frame. Non-responsiveness can also bias a sample because those who choose not to respond may have different characteristics than those who do respond, leading to a non-representative sample. Therefore, both of these options (a and c) can bias what appears to be a random sample. Attrition can also bias a sample, but it is not listed as an option in this question.

Which of the Following Is a Common Problem That Can