查询词典 t distribution

Events,Operation and Relation of Sets, Classical Probability, Geometrical Probability , Statistical Stability of a Frequency, Axioms of Probability, Conditional Probability, Total Probability Theorem, Bayes' Rule,Independent Events,Independent Repeated Trials, One Dimensional Random Variables, Discrete Random Variables, Distribution Function of a Random Variables , Continuous Random Variables, Normal Distribution, Distribution of a Function of a Random Variable, Multidimensional Random Variables, Joint Distribution Function, Marginal Distribution Function,Discrete Two—Dimensional Random Variables,Continuous Two—Dimensional Random Variables, Independent Random Variables, Distribution of Functions of Random Variables,Expectation,Variance, Covariance, Coefficient of Correlation, Bivariate Normal Distribution, Law of Large Numbers, The Central Limit Theorems, Sample and Population ,Chi—Squared, T and F Distributions , Sampling Distributions , Point Estimation , Interval Estimation , Testing Hypotheses , A Test of Significance for Parameters in a Single Sample From a Normally Distributed Population , A Test of Significance for Parameters in Two Sample From Normally Distributed Populations .

本课程的主要内容：概率的概念与运算、随机变量及其分布、随机变量的数字特征与极限定理、数理统计的基本概念、估计和检验的基本方法，随机事件与概率随机事件、事件的关系与运算、几何概率、统计概率等，条件概率、全概率公式、贝叶斯公式、事件的独立性、二项概率公式，随机变量的概念、离散型随机变量、随机变量的分布函数、连续型随机变量、随机变量函数的分布，多维随机变量及其分布函数、边缘分布函数、随机变量的独立性、二维随机变量函数的分布，数学期望、方差、协方差和相关系数、大数定律、中心极限定理，总体与样本， X 2-分布、 t-分布和 F-分布，统计量及抽样分布，假设检验的基本概念、单个正态总体参数的显著性检验、两个正态总体参数的显著性检验。

The influences of decay coefficient of the cavity and the intensity of the field on the phase distribution as well as its fluctuation are discussed.The results show:if there is absence of the phase damping,the phase distribution oscillates with the period π/λ.It presents single leaf at t=nπ/λ,but it splits into multi-leaf construction during the evolution period due to the interaction between the field and the atoms.

结果表明：当腔不存在损耗时，光场相位分布概率以π/λ作周期性振荡；且在t=nπ/λ时刻，光场和原子是退纠缠的，相位分布概率曲线在极坐标图中呈单叶型结构；但在演化周期内，由于光场与原子的相互作用相位分布概率曲线会劈裂为多叶型结构。

The experiment utilized the invertible T slab member which in the actual project is used, according to the differences of the composite stratum and the second reinforced manufactured the different experiment members, adopt the way by steps to bring to bear the equipollent distribution loads with ordinary loam brick, have carried on equipollent distribution dead load test.

试验利用实际工程中正在应用的倒T形板构件，根据叠合层和二次配筋的不同制作各种试验构件，采用普通标准粘土砖分级施加均布荷载的方法，进行了均布静荷载试验。

In the paper,a probability distribution with t-EGARCH marginal distribution and the mnltivariate gaussian Copula is built.

建立边缘分布为t-EGARCH分布连接函数为多元正态Copula函数的概率分布模型。

Given the specific marginal distribution, t-Copula is an easy way to get the joint distribution of return of assets in portfolio.

我们发现采用Poon（2003）提出的利用尾部相关性方法能够很好估算出极端情况下的尾部相关性系数并准确地判断出t-Copula函数适合作为资产收益的联合分布函数。

Using the analysis of the distribution indexes method, the results indicated that all distribution indexes of Halostachys caspica population, Haloxylon ammodendron population and Haloxylon persicum population accorded with congregated pattern within the scales of 1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m. And the T-test evidenced that the deviation from random pattern was obvious in 1~32m scale.

通过分布型指数法分析得出，在1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m的空间尺度上，盐穗木、梭梭、白梭梭种群的各项分布型指标均符合聚集分布，并且由扩散系数偏离随机分布的差异性t值检验验证了种群在1～32m尺度上显著偏离随机分布，呈聚集分布。

In this work,atomic force microscopy,near-field scanning optical microscopy,laser scanning confocal microscopy and quantum dot labeling were used to investigate the biophysical properties(the parameters including morphology,membrane nanostructures,membrane pore, friction distribution,adhesion properties,specific interaction of antigen-antibody,distribution mode of membrane receptors and so on) of T lymphocytes stimulated by phorbol dibutyrate plus ionomycin at nanoscale.

本论文基于AFM和NSOM，结合量子点标记及激光共聚焦等技术，以人外周血T淋巴细胞为研究对象，在纳米尺度研究了活化前后以及不同活化阶段T细胞生物物理特性的变化，即细胞形态结构、膜表面纳米结构、膜孔变化、膜表面摩擦力分布、膜表面粘附特性、抗原-抗体间特异性相互作用力、膜表面受体分子分布模式等。

"Davidia involucrate" was a rare valuable and endangered plant in China. In this article, We studied the distribution pattern of its population with t test of Dispersal index, X^2 test of Poisson distribution and F test of Morisita's index. Its assemble intensity is also analyzed through Negative binomial index, Green's index, Lloyd's index and Patchness index.

采用扩散系数的t检验、Poisson分布的x^2拟合检验及Morisita指数的F检验来研究珙桐种群的空间分布格局类型，用负二项参数、Green指数和Lloyd的平均拥挤度m(上标*与聚块性指标来研究珙桐的聚集强度。

The mean diameter of LDL particles in ACI group[(24.8± 0.7)nm] were more smaller than the mean diameter in the control group [(26.0± 0.6)nm,t=4.78,P0.01];the distribution of A and B pattern subfraction between the two groups was different, the distribution of B pattern LDL subfraction in ACI group was more significantly high than that in the control group.

ACI组 LDL颗粒直径 [( 24.8± 0.7) nm]较对照组 [( 26.0± 0.6) nm]明显变小( t=4.78，P0.01)；两组间 A型、 B型的分布不同， B型 LDL在 ACI组分布明显高于对照组( t=6.80，P0.05)。

In view of the peaked and fat-tailed characteristics of financial return data distribution and its effect of clustering fluctuation and especially the "leverage effect" of fluctuation on VaR estimates and some efficiencies when estimating VaR with various assumptions of return data distribution,a semi-parameter approach based on EGARCH-VaR model is developed.

在综合考虑了金融收益数据分布的尖峰厚尾特征及其波动集群性，尤其是其波动的&杠杆效应&对VaR估计的影响以及各种假定收益率分布在计算风险价值时存在不足的基础上，提出了基于EGARCH-VaR的半参数方法，并且与正态分布和t分布假设下的GARCH模型的VaR计量方法进行比较，通过实证分析，并利用后验测试，表明基于EGARCH-VaR的半参数方法对风险价值的测度优于正态分布和t分布假设下GARCH模型的VaR计量方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。