When developing a survey, which two techniques can be most effective at decreasing the possibility of courtesy bias in responses? (Choose two.) A. Make the questionnaire responses confidential. B. Employ an outside research firm to conduct the survey. C. Offer a greater range of potential responses in your survey questions. D. Pretest the questions with people who resemble your intended sample.
When developing a survey, which two techniques can be most effective at decreasing the possibility of courtesy bias in responses? (Choose two.)
A. Make the questionnaire responses confidential.
B. Employ an outside research firm to conduct the survey.
C. Offer a greater range of potential responses in your survey questions.
D. Pretest the questions with people who resemble your intended sample.