Mathematics · Statistics
Let N be the population size and n be the sample size. The efficiency of simple random sampling without replacement (SRSWOR) with respect to simple random sampling with replacement (SRSWR) is given by the ratio of their variances, which equals:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1N - 1N(n - 1)
- 2N - nN - 1
- 3n - 1N - 1
- 4N - 1N - n✓
Correct answer
N - 1N - n
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