卡方分布

Methods χ 2 -test was used to evaluate the distribution between the cases group and the contrasting group,and the statistical analysis was carried out to detect the correlation between favism and ABO blood group.

采用统计学卡方检验判断患儿组与对照组血型分布并进行疾病与ABO血型的关联分析。

Methods Blood types of 1 083 patients with 12 kinds of neurological diseases were determined by A/S standard serum glassine method, and the results were compared with blood type distribution of normal people. Besides. All the data were treated by χ2 test.

用A、B标准血清玻片法对患有神经系统12种疾病的1 083例患者进行血型测定，并与正常人群A、B、O血型分布构成比进行比较，用卡方(χ2)检验进行统计学处理。

Methods Apply epidemiological method on 208 patients to study its syndrome distribution by multivariate statistical analysis.

对208例患者进行临床调研，对所得资料采用卡方检验进行分析，研究其月经期前后单一证型的分布规律。

The study needs enterovirus infections data in Taiwan from 1999 to 2005. The sources of data include the sentinel surveillance system, the Notifiable disease reporting system and the contract lab data. Statistical methods used for the analysis of seasonal variation include graphics, chi-square test for goodness of fit, method of decomposition and circular distribution.

使用之研究材料为1999年至2005年台湾肠病毒的监测资料，包括定点医师於每周报告之手足口病与疹性咽峡炎病例、法定传染病中应报告的肠病毒感染并发重症确定病例与病毒性感染症合约实验室之肠病毒感染检验阳性病例，分别应用绘图、卡方适合度检定、分解法与圆形分布法进行分析。

Due to the violation of the PA condition, the distributions of Wald statistics and Score statistics based on GLS estimators are noncentral x~2 distributions. The efficiency of test based on the GEE mothod is infulenced.

由于PA条件不成立，回归系数的GLS估计不再是渐近无偏的，从而得到的Wald和Score统计量的分布不再是中心卡方分布拉，从而对于检验的效率也产生了一定的影响。

Chi-square test for ascertaining association between membership and performance.

卡方测验：检定两个分布情况之间的差异。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了