How does sample size impact the Mann-Whitney U test?
- Larger sample sizes make the test less reliable
- Larger sample sizes make the test more reliable
- Only equal sample sizes can be used in the test
- Sample size has no impact on the test
Larger sample sizes make the Mann-Whitney U test more reliable. As with most statistical tests, a larger sample size increases the power of the test, which is the probability that it will correctly reject a false null hypothesis.
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