This growing and dependent population means that there is an increased demand for health and social care.
人口年龄和依赖性的增长意味着对卫生和社会保健的需求增加。
单词 | Population mean |
释义 |
Population mean
原声例句
随身英语双语版 This growing and dependent population means that there is an increased demand for health and social care. 人口年龄和依赖性的增长意味着对卫生和社会保健的需求增加。 科学世界 More acorns means more food for mice, and increased mice populations means more hosts to carry Lyme-infected ticks. 更多的橡子对老鼠来说意味着更多的食物,而增加的老鼠数量意味着有更多的宿主携带感染莱姆病的蜱虫。 Newsweek " Failure to reach that population means they become kindling wood to the racial resentment messages, " says Morrison. “未能接触到这一人群意味着他们成为种族仇恨信息的火种,”莫里森表示。 精选英语短文 Low numbers in the group and the disparate nature of their population meant they mostly married neighbouring ethnic groups. 这一群体中人数较少,人口性质不同,也就是说,他们大多与邻近族群通婚。 6 Minute English 六分钟英语 One reason Peter gives for this is the high-density of populations, meaning people living together in buildings very close to one another. 皮特给出的一个原因就是高密度人口,指的是人们住在彼此离得很近的建筑中。 VOA Special 2019年11月合集 The next most common issue was the decreasing size of the traditional student population, meaning students between 18 and 24 years old. 第二个最常见的问题是传统学生人数在减少,这是指18至24岁的学生。 CNBC全球经济分析 And fewer workers to support an aging population means poor economic growth. 支持老龄化人口的工人减少意味着经济增长乏力。 潘潘 Smaller population means less famished people. 人口越少,饥饿的人民越少。 TED演讲(视频版) 2018年11月合集 That reduced population means reduced demand for electricity, food, travel, buildings and all other resources. 人口减少意味着对电力、食品、旅行、建筑和所有其他资源的需求减少。 可汗学院:统计学(视频版) So this right here is the same thing as the population mean. 所以这里的这个和人口的意思是一样的。 可汗学院:统计学(视频版) I don't want to just divided by 100-- remember, I'm trying to estimate the true population mean. 我不想只除以 100——请记住,我正在尝试估计真实的人口均值。 TED演讲(视频版) 2020年4月合集 So we are what's called the susceptible population, meaning not any of us at the beginning of this had immunity. 所以我们是所谓的易感人群,这意味着我们中的任何人在这开始时都没有免疫力。 可汗学院:统计学(视频版) The mean of your sampling distribution is going to be the same thing as your population mean. 抽样分布的均值将与总体均值相同。 创意云旅行 Considered the nation's cultural capital, Melbourne is home to a multicultural population meaning you can expect unique neighborhoods and a wide variety of delicious food. 墨尔本被认为是澳大利亚的文化之都,是多元文化人口的家园,这意味着你可以期待独特的社区和各种美味的食物。 可汗学院:统计学(视频版) Notice I didn't write it is as just the x with-- this is actually saying this is a real population mean. 请注意,我并没有把它写成只是 x,这实际上是说这是一个真实的人口平均值。 可汗学院:统计学(视频版) The mean assuming our null hypothesis, the population mean assuming our null hypothesis is 0.3. 假设我们的零假设的均值,假设我们的零假设的总体均值是 0.3。 可汗学院:统计学(视频版) And we know that this is going to be the same thing as the population mean for that random variable. 我们知道这与该随机变量的总体均值相同。 可汗学院:统计学(视频版) The population mean of random variable x. 随机变量 x 的总体均值。 时代周刊 (Time) Declining supplies and a growing coffee-drinking population mean climate change could turn a daily pick-me-up into a high-priced luxury, threatening the continued growth of the industry's customer base. 而是因为供应下降和喝咖啡的人口增长意味着气候变化可能会把每天的提神饮料变成高价的奢侈品,威胁到该行业客户群的持续增长。 可汗学院:统计学(视频版) So, my question here is, are the means and the true population means the same? 所以, 我的问题是,均值和真实人口均值是否相同?
中文百科
平均数 Mean(重定向自Population mean)
平均数(Mean)、均值是统计中的一个重要概念。为集中趋势的最常用测度值,目的是确定一组数据的均衡点。 算术平均数(或简称“平均数”)是一组样本 例如, 在统计中算术平均数常用于表示统计对象的一般水平,它是描述数据集中程度的一个统计量。我们既可以用它来反映一组数据的一般情况,也可以用它进行不同组数据的比较,以看出组与组之间的差别。用平均数表示一组数据的情况,有直观、简明的特点,所以在日常生活中经常用到,如平均速度、平均身高、平均产量、平均成绩等等。
英语百科
Mean 平均数(重定向自Population 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 |
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