查询词典 chi-square

In this paper, univariate or/and bivariate binormal model was established and its parametrers was estimated by the"method of scoring". To calculate the statistical significance of the difference between two ROC curves using any one of three distinct statistical tests: the bivariate Chi-square test, the area z-score test, and the TPR z-score test.

本文探讨了单变量、双变量双正态ROC模型的构建及其参数的最大似然估计方法；采用双变量卡方检验、真阳性率z检验、面积z检验三种方法比较了ROC曲线间是否具有显著性差异。

Methods To collect the record of fateful and great railway injuries in China from 1990 to 2000,and analyze the data by circular distribution and chi square test.

收集 1990～ 2 0 0 0年全路客、货运输重大、大事故记录资料，应用圆形分布等统计分析方法。

The LM statistic follows chi square distribution with q degrees of freedom under the null.

LM统计量在零假设下服从 q个自由度的卡方分布。为什么乘上n-q而不是n？

A new method is proposed to apply generalized chi square distribution to describe the asymmetrical distributions of noise correlation,and using generalized Gaussian distribution to describe the symmetrical distributions of noise correlation.

实验结果表明，该方法与仅采用一个广义高斯分布的方法相比，可以使鉴别错误率降低38%以上，可见利用不同的概率密度函数来描述相应的分布是减小鉴别错误率的一个有效途径。

In order to improve the validity of identifi cation of digital image origin and predetermine accurately threshold of identification,a new probability density function of generalized chi square distribution is constructed within0,1 for asymmetrical distribution of noise correlation.

为了提高鉴别数字图像来源的正确性，正确设置判别阈值，针对噪声相关性的非对称分布，在0，1区间构造了一个广义chi平方分布的新函数，并提出了一种利用广义chi平方分布来描述噪声相关性的非对称分布和利用广义高斯分布来描述噪声相关性的对称分布的新方法。

Adopt the generalized maximum likelihood radio test based on the Neyman-Pearson algorithm, to study two unresolved Rayleigh targets. And deduced the detection statistic which is chi-square random variable, which only need to know the conditional probability density functions of echo's measured amplitude, in-phase and quadrature of monopulse radio, but the signal-to-noise radio and the direction-off-arrival of any signal are unnecessary.

采用基于涅曼-皮尔逊准则的广义似然比检测，对不可分辨的两个瑞利目标进行了研究，推出了服从χ2分布的检验统计量，此方法只需要知道目标回波信号测量幅值的条件概率密度函数、单脉冲和差比值的同相和正交部分，而不需要任一目标信号的信噪比和DOA的先验知识。

Data analysis, I use the scientific statistical methods, the data descriptive statistics, correlation analysis, contingency table analysis, the chi-square test, Gamma coefficient test methods to be aligned with the actual results.

在数据分析方面，采用科学的统计方法，对数据进行描述统计、相关性分析、列联表分析、卡方检验、 Gamma 系数检验等方法，以期得到贴合实际的结果。

Results There were 17 patients received 1 TOM session and 3 patients received 2 TOM sessions while 16 patients received 1 CRP session and 4 patients received 2 CRP sessions. The chi-square (x2) test was used in evaluating the association between two independent samples in a contingency table.

结果 采用三维滚轮耳石复位系统治疗的患者中第1次治疗后有17例(85%)治愈，3例经过第2次治疗痊愈；采用手法复位的患者中第1次治疗后有16例(80%)治愈，4例经过第2次治疗痊愈。

Result's standard: statistics management:use chi-square test,exact probabilities in 2×2 table and correlation analysis.

结果判定：p16蛋白的阳性表达为细胞核，cyclinD1蛋白阳性表达为细胞核；参照Shimizu等的判断标准。

It was hypothesized that the 12 subtests of the WISC-R measure three common factors: Verbal Comprehension, Perceptual Organization, and Freedom from Distractibility such that subtests 1,2,4,5 measure VC, subtests 7,8,9,10, 12 measure P0, and subtests 3,6,11 measure FD The chi-square goodness-of-fit test was used to assess the overall fit of this model.

以 LISREL VI电脑程式的「最大概度法」分析的结果，显示「WISC-R 的十二个分量表分别测三个共同因素」、「共同因素之间有相关」、和「唯一性因素互为独立」之因素模式不能解释实际观察资料。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。