15. a survey was sent out by mail to collect ...
15. a survey was sent out by mail to collect information concerning support of the local school levy. of the 2000 surveys mailed out, only 400 were returned. this is an example of a potential: answer choices: response bias. nonresponse bias. selection bias.
Answer
# Brief Explanations:
Non - response bias occurs when a significant portion of the sample does not respond. Here, out of 2000 surveys mailed, only 400 were returned, indicating a large number of non - respondents which can skew results. Response bias is about how respondents answer, and selection bias is about how the sample is chosen. This is a non - response issue.
# Answer:
nonresponse bias.