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CSS Statistics QUESTION #1970
Question 1
Which of the following actions is most effective in reducing sampling error?
  • Adopting non-probability sampling
  • Expanding the population size
  • Decreasing the sample size
  • Increasing the sample size✔️
Correct Answer Explanation
Sampling error decreases as sample size increases, because larger samples yield better parameter estimates. The standard error \(SE = \dfrac{\sigma}{\sqrt{n}}\) decreases as \(n\) increases.