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  2. Mann–Whitney U test - Wikipedia

    en.wikipedia.org/wiki/MannWhitney_U_test

    The MannWhitney test (also called the MannWhitneyWilcoxon (MWW/MWU), Wilcoxon rank-sum test, or WilcoxonMannWhitney test) is a nonparametric statistical test of the null hypothesis that, for randomly selected values X and Y from two populations, the probability of X being greater than Y is equal to the probability of Y being greater than X.

  3. Median test - Wikipedia

    en.wikipedia.org/wiki/Median_test

    The WilcoxonMannWhitney U two-sample test or its generalisation for more samples, the Kruskal–Wallis test, can often be considered instead. The relevant aspect of the median test is that it only considers the position of each observation relative to the overall median, whereas the WilcoxonMannWhitney test takes the ranks of each ...

  4. Nonparametric statistics - Wikipedia

    en.wikipedia.org/wiki/Nonparametric_statistics

    MannWhitney U or Wilcoxon rank sum test: tests whether two samples are drawn from the same distribution, as compared to a given alternative hypothesis. McNemar's test: tests whether, in 2 × 2 contingency tables with a dichotomous trait and matched pairs of subjects, row and column marginal frequencies are equal.

  5. Rank correlation - Wikipedia

    en.wikipedia.org/wiki/Rank_correlation

    The rank-biserial is the correlation used with the MannWhitney U test, a method commonly covered in introductory college courses on statistics. The data for this test consists of two groups; and for each member of the groups, the outcome is ranked for the study as a whole.

  6. Wilcoxon signed-rank test - Wikipedia

    en.wikipedia.org/wiki/Wilcoxon_signed-rank_test

    The one-sample Wilcoxon signed-rank test can be used to test whether data comes from a symmetric population with a specified center (which corresponds to median, mean and pseudomedian). [11] If the population center is known, then it can be used to test whether data is symmetric about its center.

  7. Colon cancer: Measuring ‘biological age’ may help predict who ...

    www.aol.com/lifestyle/colon-cancer-measuring...

    One’s biological age, which measures the body’s physiological state, may help predict who is at risk for developing colon polyps, a known risk factor for colorectal cancer.

  8. Wilcoxon - Wikipedia

    en.wikipedia.org/wiki/Wilcoxon

    Wilcoxon is a surname, and may refer to: Charles Wilcoxon, drum educator; Henry Wilcoxon, an actor; Frank Wilcoxon, chemist and statistician, inventor of two non-parametric tests for statistical significance: The Wilcoxon signed-rank test (also known as the Wilcoxon T test) The Wilcoxon rank-sum test (also known as the MannWhitney U test).

  9. Antibiotic use does not increase dementia risk, study suggests

    www.aol.com/antibiotic-does-not-increase...

    Antibiotic use was not associated with an increased risk of cognitive impairment and dementia in healthy older adults, according to a recent study.