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### 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


Sagot :

Final answer:

Bias can occur in sampling when certain groups are favored over others, impacting the accuracy of the results.


Explanation:

Bias in Sampling:

  1. Patients with no cavities: This sample excludes individuals who might have better dental hygiene habits.
  2. Patients younger than 18: This sample focuses on a specific age group, ignoring the habits of older patients.
  3. Patients with braces: This sample targets a specific subgroup, potentially skewing the results.

Learn more about Sampling Bias here:

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