英语词汇“Median test”是什么意思，翻译、用法及简单造句-英汉双解词典-英汉网

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单词	Median test
释义	Median test 原声例句 VOA常速英语_非洲 The school's principal says attendance is up and so to our median test scores. 学校校长说，孩子们的出勤率提高了，我们期中考试的成绩也提高了。英语百科 Median test In statistics, Mood's median test is a special case of Pearson's chi-squared test. It is a nonparametric test that tests the null hypothesis that the medians of the populations from which two or more samples are drawn are identical. The data in each sample are assigned to two groups, one consisting of data whose values are higher than the median value in the two groups combined, and the other consisting of data whose values are at the median or below. A Pearson's chi-squared test is then used to determine whether the observed frequencies in each sample differ from expected frequencies derived from a distribution combining the two groups.
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