回归系数

In order to determine the principal factors and characters, which affect industries evaluation and development, the paper builds character variable of regression coefficient and using the character variable classify industries.

进一步通过建立回归系数特征变量，分析不同行业的回归系数，并确定影响行业发展与评价的主要因素及特征，根据其特征将行业进行分类。

The correlation coefficient of this model was 0.66, which passed the validation of regression equation and regression coefficients.

模型的相关系数为0.66，通过了回归方程和回归系数的检验。

We make the following assumption for When 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of Least squares estimate have been discussed in many documents. Considered 2 is nonnegative definite matrix, this thesis derives Best linear unbiased Estimate of parameter matrix B and estimable parameter function KBL under the meaning of matrix nonnegative definite and the property of maximum probability of BLUE is investigated.

当∑＞0时，众多文献讨论了回归系数阵的各种估计及LSE的有效性，本文考虑了当∑≥0的情形，给出了回归系数阵B及其可估参数函数KBL的在矩阵非负定意义下的最优估计，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与BLUE的偏差估计，定义了LSE相对于BLUE的一个相对效率，并给出了它的界。

This model can analyze the regression relation between covariate and log survival time, and its form and explanation of regression coefficient is close to the general linear regression equation, the explanation of analysis results is more simple, more direct and easier to understand than that of proportional hazard function model.

AFT模型研究协变量与对数生存时间之间的回归关系，模型的形式与对回归系数的解释与一般的线性回归方程相似，而对分析结果的解释则较比例风险回归模型简单、直观，更易于理解。

From the agro-climatic statistics point of view, using the application of stepwise regression, least squares, the moving average method, the correlation coefficient, partial regression coefficient method to determine the critical period of climate sorghum and climate key factor influencing sorghum output.

方法］从农业气候统计学角度，应用逐步回归、最小二乘法、滑动平均法、相关系数、偏回归系数方法，确定高粱气候关键期和影响高粱产量的气候关键因子。

Ects, the covariance matrix of observation vector has special structure,and using the linear transformation for original model by idempotent matricesin the spectral decomposition of the covariance matrix, the problem of estima-tion of the covariance matrix becomes simultaneous estimation of all the distincteigenvalues of it.

在带有随机回归系数的一般线性模型中，首次提出了随机回归系数和参数的Minimax估计问题，分别在齐次线性估计类和一切估计类中研究了一个线性估计的Minimax性。

Results In DM group the standard partial regression coefficient of FPG and Fins is 0.6542, 0.3749 and in the IGT + IFG group is 0.6452, 0.3749 respectively.

结果 在DM组中FPG和FIns的标准偏回归系数分别为0.4998，0.5106，IGT+IFG组中FPG和FIns的标准偏回归系数分别为0.6452，0.3749。

objective to study the correlation among psychosomatic health factors,depression,anxiety and sleep status in college students,to analyze influence factors in sleep status.methods with questionnaire opened in-vestigation,200college students were evaluated using cornell medical index,self-rating depression,self-rating anxiety scaleand pittsburgh sleep quality index.stepwise regression analysis was used.re-sults total score of sds was35.55±7.8,and sas was0.48±0.9.each score of cmi was higher than normal range,the highest was digestion system,next was respiration system,then,fatigue,eyes and ears,anxiety,sensitivity,tension,maladjustment in turn.total average score of psqi was6.32±3.6,ordinary sleep were115cases（57.5%）,good and bad sleep were42（21%）and43（21.5%）cases respectively.influence factors in total score of psqi were sas,cmi,respiration system,anxiety,past healthy,digestion system,fatigue,sensitivity,sds and malad-justment in turn,using stepwise regression analysis,total score of psqi as dependent variable,each factor score of cmi,total score of sds and sas as independent variables.conclusion problems of psychosomatic health,anxiety and depression could both lead to sleep disorder.

目的 研究在校大学生心身健康因素及抑郁焦虑等与睡眠状况的相关性，并对影响睡眠状况的有关因素进行分析。方法采用问卷式的开放性研究，对在校的200名大学生进行康奈尔心身健康问卷、自评抑郁量表、焦虑自评量表和匹兹堡睡眠质量量表的测定，采用逐步回归分析方法。结果 sds总分为35.55±7.8、sas总分为0.48±0.9，cmi评分：消化系统最为严重评分为2.52，其次为呼吸系统、疲劳感、眼和耳、焦虑、敏感、紧张、不适应等，评分均高于正常常模。psqi总均分为6.32±3.6，一般睡眠有115例占57.5%，睡眠质量较好42例占21.0%，睡眠质量较差43例占21.5%。评估对睡眠状况的影响程度，以psqi总分为因变量，选择cmi各因子分和sds、sas总分作为自变量，进行多因素逐步回归分析，进入方程的因素依据标准化偏回归系数，影响psqi总分的因素依次为sas总分、cmi总分、呼吸系统、焦虑、既往健康、消化系统、疲劳感、敏感、sds总分、不适应（f=226.8；p.01；r=0.73）。结论心身健康问题和焦虑抑郁可导致睡眠障碍。

Counting the "3 oxygen " and "3 nitrogen" data of the Dawangtan reservoir with the monadic linear regression method, by significance test of correlativity coefficient and regression coefficient, the author put forward the equation of correlativity significance tests.

运用一元线性回归对大王滩水库的&三氧&&三氮&资料进行统计，并经相关系数和回归系数显著性检验，得出相关性显著的方程，利用该方程可提高水质评价的准确性和监测效

Selecting Wanxiangqianchao(000559) as sumple, the third level analyzes the investment structure and behavior of listed firms,and talks about the charactericstic of listed firms from the anagle of financing structure and corporate governance.

4ROA、MROA、ROE、CFO对第一大股东持股比例平方的回归系数显著为正，而企业市场价值指标托宾Q和M/B对第一大股东持股比例平方的回归系数显著为负，表明业绩指标和市场价值指标之间存在背离的关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。