Câu 128: DA0-001: Data+

Which of the following best describes the law of large numbers?

1. A. As a sample size decreases, its standard deviation gets closer to the average of the whole population.
2. B. As a sample size grows, its mean gets closer to the average of the whole population. — đáp án hiện tại
3. C. As a sample size decreases, its mean gets closer to the average of the whole population.
4. D. When a sample size doubles, the sample is indicative of the whole population.