The principal of a high school e-mails a survey to all parents asking them to vote on the best time to have the PTA meeting. She only receives responses from 56% of the parents. Describe how the design of the survey leads to bias.

A nonresponse error was made in this design. This type of sampling only represents those who answered the survey; it does not represent the entire population.

A nonresponse error was made in this design. This type of sampling only represents the parents at this school and not the entire population.

A convenience sample error was made in this design. This type of sampling only represents the parents with e-mail addresses and not the
entire population.

An undercoverage error was made in this design. This type of sampling only represents the parents in the city and not the entire population.

There are no potential areas of bias.