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- In many mate-quality recognition systems, females prefer signals that deviate most from the population mean. 对雌性有吸引力的特徵，会有夸大的演化现象。
- The community abstract mean height isthe accumulative total of each and every population mean height with its cor-responding relative density as a probability weight. -ea-kt 群落的抽象平均高度为各种群的平均高度以相应的相对密度为概率值的累加,抽象平均高度的变化与生物量的变化相符合。
- This article discusses some methods to calculate the estimator minimum variance of the finite population mean which had been given in[1].It also makes s... 对文[1]中给出的求有限总体均值估计量最小方差的几种方法进行了讨论,并对其求解方法进行了改进。
- Managers also encounter situations in which it is useful to test for the equality of more than two population means. 管理人员还会遇到需要检验两个以上的总体平均数是否等同的问题。
- China's large population meant that the school had to expand to take in many more students. 扩大来接纳更多的学生。
- The Two-Sample t-Test analysis tools test for equality of the population means that underlie each sample. “双样本t-检验”分析工具基于每个样本检验样本总体平均值是否相等。
- Interval estimation of the population mean 总体平均值的区间估计
- This tool is used to test the null hypothesis that there is no difference between two population means against either one-sided or two-sided alternative hypotheses. 此工具用于检验两个总体平均值之间不存在差异的空值假设,而不是单方或双方的其他假设。
- As with the preceding Equal Variances case, you can use this t-Test to determine whether the two samples are likely to have come from distributions with equal population means. 如同上面的“等方差”情况,可以使用此t-检验来确定两个样本是否来自具有相同总体平均值的分布。
- The z-Test tool can also be used for the case where the null hypothesis is that there is a specific nonzero value for the difference between the two population means. z-检验工具还可用于当两个总体平均值之间的差异具有特定非零值的空值假设的情况。
- Previous authors have combined tests for pairs and unpaired data so that population means can be compared using a paired study design with incomplete data. 本文的主要目的是对点估计、信赖区间、和假设检定的基本性质做重点整理，并透过大量的例子说明他们广泛的应用。
- Do you mean say we are met for a thunder storm? 你肯定我们会遇到一场雷雨？
- I feel mean for not doing more for my son. 我对没为我儿子多做点事而感到惭愧。
- Defeat in this election would mean he was done for. 这场选举的失败意味着他政治生涯的结束。
- By power we mean the rate of doing work. 我们说功率就是指做功的速率。
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- I have no conception of what you mean. 我想不出你的意思是什么。
- The mean yearly rainfall is20 inches. 每年平均降雨量是二十英寸。
- Do you mean Miss Anne Smith or Miss Mary Smith? 你指的是安·史密斯小姐还是玛丽·史密斯小姐？
- A desert has no settled population. 沙漠没有固定的居民。
