统计学的

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

因此， 学区的比例了。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，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。

Some methods of environmental geochemistry, pedology, ecology and statistics are combined applied to study the effects of discarded rocks and mining tailings in metal mining on soil heavy metal pollution and the effects of these contamination on hygienic quality and nutritional quality of Chinese cabbage .

综合运用环境地球化学、土壤学、生态学和统计学的方法开展了矿山废弃物尾矿石的堆置对土壤造成的污染以及矿区土壤重金属污染对白菜的卫生品质和营养品质的影响研究。

In this paper,the theory and methodology of spatial correlation analysis and its application in insect ecology are summarized, methods of applying GIS are also discussed.

据此 ，文章对常用的地质统计学的空间相关理论和方法、以及这些理论和方法在昆虫生态学中的应用途径和研究进展作了简述。此外，对GIS在昆虫空间相关分析中的应用途径和方法也作了探讨。

The advantage of picking 1910 was that America had not yet settled down, demographically speaking.

从人口统计学的角度来说，采用1910年的数据的好处在于这时的美国还不稳定。

The advantage of picking 1910 was that America had not yet settled down, demographically speaking.

从人口统计学的角度来说，采用1910年的数据的有利因素在于当时的美国尚未完全安定。

The great room that first caught on in the early 1990s is undergoing a revival - a large, undelineated family room/breakfast nook/kitchen combination meshes well with attitudes of casualness and flexibility.

上面的人口统计学的东西也开始影响到住房了。90年代首次出现的大房----一个不是很明确的家庭活动室，早餐室，厨房的混合体，随意而灵活----正在经历重生。

In the test, we use CCD camera to obtain the videos of the well-cutting picks and the worn-cutting picks, then use Matlab to read image and process it, and then use the method of statistics to calculate the average area of the two cutting picks, at last can get the wear rate of cutting picks.

用CCD摄像机获得完好截齿和磨损截齿的视频段，然后用Matlab读取图像并对其处理，利用统计学的方法，快速计算出两个截齿的平均面积，从而得到截齿的磨损率。

Contents: Multivariate statistical analysis is developed quickly on the foundation of mathematical statistics. It is widely applied in every field of natural science and social science and it is the indispensable important tool to handle multivariate data.

主要内容：多元统计分析是在数理统计学的基础上迅速发展起来的一门学科，已广泛应用于自然科学和社会科学的各个领域，是处理多维数据不可缺少的重要工具。

Content: Multivariate statistical analysis is developed quickly on the foundation of mathematical statistics. It is widely applied in every field of natural science and social science and it is the indispensable important tool to handle multivariate data.

多元统计分析是在数理统计学的基础上迅速发展起来的一门学科，已广泛应用于自然科学和社会科学的各个领域，是处理多维数据不可缺少的重要工具。

For example, a school superintendent wishes to determine the proportion of children in a large school system who come to school without breakfast, have been vaccinated for flu, or whatever.

免疫的学生，或其它任何类型的学生占多大比例。若具备一些统计学的知识，这位督察应明白，询问每个孩子是没有必要而且没有效率的，只要用100

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐