A researcher decides to talk with parents after a parent-teacher meeting at the elementary school. To learn how parents feel about the use of standards for testing 4th graders in the school district, the researcher locates an instrument and uses it as a basis for asking a group of parents in the cafeteria questions about testing 4th graders. What is the form of survey data collection?
◦ Focus group interview
◦ Mailed questionnaire
◦ Individual interview
◦ Electronic questionnaire