Sampling errors are reduced by:___________________?
Correct answer: A. Increasing the sample size
- A. Increasing the sample size
- B. Decreasing the sample size
- C. Increasing population s.d.
- D. None of these
Explanation
A larger sample usually gives a more stable estimate and reduces sampling variability, with standard error decreasing roughly as the inverse square root of sample size. Thus increasing the sample size is the appropriate choice.
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