查询词典 population statistics

According to the statistics, the city from 1840-18.2 million population growth, including 115 net 1/5 in Appalachia and the west.

据统计，1820-1840年间全国城市人口净增长115万人，其中1/5集中在阿帕拉契亚以西地区。

So, we discuss the asymptotically best linear unbiased estimator for the logistic population based on the selected order statistics, give the pr.

为缓解这一困难，本文讨论利用样本分位数的Logistic总体的近似最佳线性无偏估计，给出估计量的大样本性质，以及样本分位数不超过10情形下，估计量有渐近最大相对估计效率时样本分位数的选取方案等。

That is 56 percent of the country 's population,says the National Bureau of Statistics.

这占到了全国人口的56％，这是来自官方的统计数字。

MARK COLVIN: The statistics on China are dizzying, its population, growth, influence around the globe.

马克科尔文：中国的各项统计数据都是令人眩目的，从它的人口，进步到对全球的影响。

In statistics, a confidence interval is an interval estimate of a population parameter.

在统计学里，置信区间指的是对于某一群体参数的区间估计。

Key statistics of the population for the whole territory and selected characteristics of the District Council Districts are presented in Table 1 and Table 2 of this article.

有关全港人口及住户的主要统计数字及十八个区议会分区的选定特征分别载于本文的表一及表二。

Disney head Michael Eisner has said that his greatest dream is to enter the China market due to a statistics: China has 260 million children under age 15, and the United States population Xiangqu near.

迪斯尼掌门人艾斯纳曾说，他最大的梦想就是进军中国市场，原因在于一个统计数字：中国有2.6亿15岁以下的儿童，这和美国人口相去不远。

Thus, the purpose of inferential statistics is to predict or estimate charact eristics of a population from a knowledge of the characteristics of only a sample of the population.

因此， 推理统计学的目的就是通过了解一个群体中一些样本的特性，从而对整个群体的特性进行推测和估算。

According to the quality of HT statistics, we know that the sampling structure after adjusting is relatively closed to that of population. The accuracy of the population parameter inferred through this statistic will be higher than that have not considered the influence from background.

在确定出对核心问题回答有影响的背景因素之后，我们应用Horvitz Thompson统计量对抽样调查的数据作适当调整，由Horvitz Thompson统计量的性质，我们知道经过处理后的样本结构比较接近总体结构，由该统计量推断出的总体参数的精度比不考虑背景因素影响条件下的精度更优。

From the late fifties, the Chinese every year census, which statistics are basically accurate, to the Cultural Revolution, when China's population is nearly 800 million, if the Great Leap Forward, when China is really the people's communes to "go out no see, Avicennia shield plains "with it, then at that time China's 800 million population is out fall in. Where?

从五十年代後期开始，中国每年都有人口统计，这统计基本上是准确的，到文革时中国的人口已近八亿，如果大跃进、人民公社时的中国真是到了「出门无所见，白骨蔽平原」的程度，那么当时中国的八亿人口是从哪里钻出来的？

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。