Answer :
Final answer:
Bias can occur in sampling when certain groups are favored over others, impacting the accuracy of the results.
Explanation:
Bias in Sampling:
- Patients with no cavities: This sample excludes individuals who might have better dental hygiene habits.
- Patients younger than 18: This sample focuses on a specific age group, ignoring the habits of older patients.
- Patients with braces: This sample targets a specific subgroup, potentially skewing the results.
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