查询词典 chi square distribution

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。

Empirical distribution function ; mean of residual life function ; esti mation minimum distance ; estimation minimum chi-square

经验分布函数；剩余期望函数；最小距离估计；卡-方估计

Methods We enrolled 551 vitiligo patients with psychological problems from total 7443 patients with vitiligo after investigating sexuality, profession, area of lesions, distribution, reactiveness and typing by filling out the epidemiological questionnaire, and then we analyzed the correlation of psychological problems and clinical manifestations. Statistical analyses were performed using SPSS-13.0 software, and the data were analyzed by Chi-square test and variance analysis.

采用统一制定的流行病学调查表，调查员对白癜风患者进行面对面同等细致询问，就其性别、职业、皮损面积、单双侧分布、皮损的活动性及分型等情况进行调查，并让患者自身评价其心理状况，从7 443例患者中筛选出551例自觉有心理问题的患者，分析上述临床资料与心理问题的相关性。

Results The distribution of the curative effect is verified by Wilcoxon signed rank test（P .01）.There are significant statistical differences of the two groups; the cure rates（72.97% vs 15.38%）and the total effective rates（94.59% vs 73.08%） of two groups are verified by contingency table chi square test（P.01 vs P.05 ）, There are all significant statistical differences.

结果 治疗组和对照组经Wilcoxon符号秩和检验（P＜0.01），差异有显著性，两组治疗方法的疗效分布不同；对两组的治愈率（72.97%和15.38%）和总有效率（94.59%和73.08%）分别采用四格表χ2检验（P＜0.01和P＜0.05 ），差异均有显著性。

Further, the mean weight of each size of bean was used to predict the egg distribution on different sizes of hosts, and Chi-square test was applied to test the goodness of fit between the observed and predicted distributions.

於是我们更进一步尝试以各等级寄主重量所占比例来预测产卵分布，并以卡方分析来检测其与实际产卵分布的差异。

the article examines the characteristics of foreign exchange returns distribution,coupling with kinds of foreign exchange datas, figures out parameters of model by using variance gamma model.the empirically results ofkolmogorov-smirnov test and goodness of fit chi-square test shows that v.g.

本文运用方差gamma模型对外汇收益分布特征进行对比拟合分析，并结合几种被选汇率数据对模型参数进行估计。ks检验和卡方拟合优度检验的实证结果表明v.g。

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。

It was proved by Chi-square test that the number of observation of F2 individuals for the density of glandular trichome could fit the normal distribution, indicating the genetic charactistics of the density of glandular trichome as a quantitative trait.

不同亲本腺毛密度的一般配合力方差和不同组合的特殊配合力方差均达到了1%极显著水平；中烟90和8136的一般配合力效应较大，潘园黄×中烟90、潘园黄×RG17、8136×红大和红大×RG17的特殊配合力效应较大。

Intra-/inter-specific spatial pattern: Four distribution measurements (variance/mean ratio, chi-square test, Clark-Evans index and Haberman residual analysis) were used.

分布格局分析采用四种方法：方差均值比、x〓检验、Clark-Evans指数和Haberman剩余分析，前2种属样方法，后2种属无样地法。

Methods The data of accidents from 1963 to 2002 were collected and analyzed by circular distribution and chi-square test.

收集196 3～2 0 0 2年间某铁路局管内道口事故记录的数据，应用圆形分布等统计分析方法。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。