A) unmanageable
(B) unpredictable
(C) understandable
(D) unreliable
30. According to the passage, what is the purpose of examining a sample of a population?
(A) To compare different groups
(B) To predict characteristics of the entire population
(C) To detect differences not observable in the whole population
(D) To compile more accurate data
(B) unpredictable
(C) understandable
(D) unreliable
30. According to the passage, what is the purpose of examining a sample of a population?
(A) To compare different groups
(B) To predict characteristics of the entire population
(C) To detect differences not observable in the whole population
(D) To compile more accurate data