英语词汇“Mean score”字怎么读，Mean score的拼音、意思释义、用法及组词造句例句翻译-英语翻译词典-学习充电-依恋情感网

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词汇	Mean score
分类	英语词汇英语翻译词典
释义	Mean score 原声例句 6 Minute English 六分钟英语 Marks - so here you mean scores in tests or exams. 成绩是指在测试或考试中得到的分数。梦幻橄榄球手 Which that, I mean, we all scored not enough points. 我的意思是，我们都没有得到足够的分数。 Engvid-Adam-课程合辑 The universities, they want to see your mean score. What does that mean? 大学，他们想看看你的平均分数。那是什么意思？英语百科 Mean In mathematics, mean has several different definitions depending on the context. In probability and statistics, mean and expected value are used synonymously to refer to one measure of the central tendency either of a probability distribution or of the random variable characterized by that distribution. In the case of a discrete probability distribution of a random variable X, the mean is equal to the sum over every possible value weighted by the probability of that value; that is, it is computed by taking the product of each possible value x of X and its probability P(x), and then adding all these products together, giving $\mu = \sum x P(x)$ . An analogous formula applies to the case of a continuous probability distribution. Not every probability distribution has a defined mean; see the Cauchy distribution for an example. Moreover, for some distributions the mean is infinite: for example, when the probability of the value $2^n$ is $\tfrac{1}{2^n}$ for n = 1, 2, 3, ....
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