"Mann-Whitney U test" meaning in English

{
  "etymology_text": "Developed by Henry B. Mann and Donald R. Whitney, who described it in a 1947 paper.",
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  "lang_code": "en",
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      "glosses": [
        "A nonparametric test of the null hypothesis that the probability that a randomly selected value from one population is less than a randomly selected value from a second population is equal to the probability of being greater. It can be used to investigate whether two independent samples were selected from populations having the same distribution."
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          "statistics",
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          "nonparametric",
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          "null hypothesis",
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          "probability",
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      "raw_glosses": [
        "(statistics) A nonparametric test of the null hypothesis that the probability that a randomly selected value from one population is less than a randomly selected value from a second population is equal to the probability of being greater. It can be used to investigate whether two independent samples were selected from populations having the same distribution."
      ],
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        "statistics"
      ],
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{
  "etymology_text": "Developed by Henry B. Mann and Donald R. Whitney, who described it in a 1947 paper.",
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      "glosses": [
        "A nonparametric test of the null hypothesis that the probability that a randomly selected value from one population is less than a randomly selected value from a second population is equal to the probability of being greater. It can be used to investigate whether two independent samples were selected from populations having the same distribution."
      ],
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        "(statistics) A nonparametric test of the null hypothesis that the probability that a randomly selected value from one population is less than a randomly selected value from a second population is equal to the probability of being greater. It can be used to investigate whether two independent samples were selected from populations having the same distribution."
      ],
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        "statistics"
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