Question

ch 8 each month, the census bureau mails survey forms to 250,000 households asking questions about the people living in the household and about such things as motor vehicles and housing costs. telephone calls are made to households that don’t return the form. in one month, responses were obtained from 240,000 of the households contacted. if the household does not return the form, and cannot be contacted by telephone, this is

● nonresponse.

○ volunteer bias.

○ simple random sampling.

○ undercoverage.

Explanation:

• Nonresponse occurs when selected individuals (households here) do not respond to a survey, even after follow - up attempts (like telephone calls in this case).
• Volunteer bias is about people volunteering to be in a survey, which is not the case here.
• Simple random sampling is a sampling method, not related to non - response.
• Undercoverage is when some groups are left out of the sampling frame, which is not what's happening here as all 250,000 households were contacted. So the correct option is nonresponse.

Answer:

A. nonresponse