Question

alejandro wants to determine the average shoe size of all of the male students in his school. which sample is likely to yield the most biased results?

○ every tenth boy on the schools phone list
○ every member of the boys basketball team
○ every boy in a randomly selected ninth-, tenth-, eleventh-, and twelfth-grade gym class
○ every fifth boy who walks through the front doors of the school in the morning

Explanation:

A biased sample does not represent the population well. The boys' basketball team is a specialized group (athletes, likely taller with potentially larger shoe sizes) compared to the general male student population. The other options (phone list, random gym - class boys, boys entering school) are more likely to be random and representative.

Answer:

B. every member of the boys' basketball team