Veterinarians often use nonsteroidal anti-inflammatory drugs to treat lameness in horses. A group of veterinary researchers wanted to find out how widespread the practice is in the United States. They obtained a list of all veterinarians treating large animals, including horses. They sent questionnaires to all the veterinarians on the list. Such a survey is called a census. The response rate was 40%. Which of the following statements is not correct?
A)Such a low response rate has the potential for response bias.
B)The intended sample consisted of the target population.
C)The chance to be selected into the sample was the same for all veterinarians.
D)The sample was a volunteer sample.

Question

Quizplus · Accepted Answer

The sample was not a volunteer sample since all veterinarians treating large animals were included in the list and received the questionnaire. Therefore, option D is not correct. Option A is correct because a low response rate increases the likelihood of response bias, where nonrespondents may have different characteristics than respondents. Option B is correct because the intended sample (all veterinarians treating large animals) represents the target population (veterinarians treating large animals in the United States). Option C is correct because each veterinarian had an equal chance of being included in the sample as they were all on the same list.

Veterinarians Often Use Nonsteroidal Anti-Inflammatory Drugs to Treat Lameness in Horses