identifying biased samples a dentist wants to...
identifying biased samples a dentist wants to find out how often her patients floss their teeth. which samples are biased? check all that apply all her patients patients with no cavities patients younger than 18 every 20th patient every patient with braces
Answer
# Brief Explanations:
A biased sample is one that does not represent the entire population well. Patients with no cavities may be more likely to floss regularly, so this sample is likely to over - represent good flossing habits. Patients younger than 18 may have different flossing behaviors than adults. Patients with braces may have different oral - hygiene routines related to their braces, not just general flossing habits. These samples are not representative of all patients. Every 20th patient is a form of systematic sampling which can be unbiased if done properly, and all her patients is the entire population which is not a biased sample.
# Answer:
patients with no cavities, patients younger than 18, every patient with braces