共查询到20条相似文献，搜索用时 203 毫秒
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张跃 《成都教育学院学报》2000,14(3):69-69,71
在高等教育出版社出版的中等专业学校教材工科专业通用的《数学》第四册中，概率与统计这一章中的一元线性回归，它是处理非确定性的相关关系的好方法，书中介绍了二个变量之间的相关关系是线性时，用一元线性回归的数学模型来解决。 相似文献
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从理论上证明了一元线性回归中选取不同的变量时，所得两条回归直线的关系。讨论了两直线夹角的正切。 相似文献
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《赤峰学院学报(自然科学版)》2017,(15)
一元线性回归主要研究两个变量之间的线性相关关系,本文主要论述了一元线性回归分析的基本理论,借助统计软件SPSS对一个简单的实例进行了分析,包括对实例的相关性分析、建模、对模型的显著性检验以及残差的分析,通过实例更进一步了解一元线性回归在具体问题中的应用. 相似文献
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一元线性回归模型是中职数学教学中的重要内容,在一元线性回归模型中,最重要的就是回归系数的取值。但在以往的教学中,关于一元回归系数的确定只是通过公式计算,没有推导过程,学生并不明白其中的含义。文章通过引入实例,采用数形结合的方法帮助学生理解一元线性回归模型的基本理论和适用方法,并利用相关软件估计回归参数,同时进行显著性检验,并通过模型进行预测,进一步检验模型的可行性,以此为一元线性回归模型的教学改进提供一定的参考。 相似文献
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介绍公路建设与农村发展问题的相关性,从统计方法来讲,利用相关分析和一元线性回归分析,重点利用一元线性回归模型,建立农村发展问题各个指标与变量公路建设（路网密度）的一元线性回归模型,描述和预测公路建设对解决农村发展问题的作用。 相似文献
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回归分析法是研究相关关系的一种数量统计方法。它是通过一定的相关关系方程表达式来研究变量之间的密切程度，从而可从一个变量或几个变量的取值去预测另一个变量取值的一种定量预测方法。这是我们在定量预测时用得最多的一种方法，根据自变量的多少可分为一元回归分析、二顺归分析和多元回归分析。最常用的是一元回归分析。 相似文献
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Matlab工具在数理统计学中的应用--一元回归问题的计算机求解法 总被引：3，自引：0，他引：3
介绍了利用Matlab数学计算工具来进行一元回归拟合的方法，包括求解思路、流程图、主要程序、程序的使用方法。 相似文献
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本文内容包括三部分。第一部分简单列出一元线性回归的有关计算公式;第二部分详细绘出一元线性回归分析法的微机处理流程图,第三部分列举应用实例。本文所介绍的一元线性回归分析法的微机处理,具有快速、准确、适用范围广以及中文显示等特点,对实验教学中教师检查学生实验数据,提高实验教学质量具有一定的意义。 相似文献
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以一元非线性回归模型程序设计为例，探讨如何用VC 6.0编制经济预测模型程序的方法。 相似文献
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This report uses structural equation modeling to combine traditional ideas from repeated-measures ANOVA with some traditional ideas from longitudinal factor analysis. A longitudinal model that includes correlations, variances, and means is described as a latent growth curve model (LGM). When merged with repeated-measures data, this technique permits the estimation of parameters representing both individual and group dynamics. The statistical basis of this model allows hypothesis testing of various developmental ideas, including models of alternative dynamic functions and models of the sources of individual differences in these functions. Aspects of these latent growth models are illustrated with a set of longitudinal WISC data from young children and by using the LISREL V computer program. 相似文献
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John D. Williams 《Journal of Experimental Education》2013,81(2):83-90
This paper describes a regression approach to experimental design. Typically, the educational researcher is familiar with the usual analysis of variance techniques and is unaware of the versatility of multiple regression for problem solving. The specific approach used in this paper assumes only a familiarity with experimental design and access to a general purpose multiple regression program which is likely to be on hand at any computer installation. Examples of the t-test, 1-way analysis of variance, and the treatment X subjects design from a regression standpoint are given. 相似文献
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Excel 2000在生物统计中的应用 总被引：1，自引：0，他引：1
农业科技工作者常因试验结果的统计分析而伤脑筋，利用计算机处理数据能节省时间和提高精确度。Excel 2000在生物统计中是一个非常有用的应用软件。本文通过举例，介绍了Excel 2000在方差分析、相关分析与直线回归分析中的使用方法。 相似文献
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韦达定理是初等数学中的重要内容,它是揭示一元二次方程根与系数关系的重要定理。利用多项式理论将其推广到一元n次方程中,并介绍其简单应用。 相似文献
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System identification is a method for using measured data to create or improve a mathematical model of the object being tested. From the measured data however, noise is noticed at the beginning of the response. One solution to avoid this noise problem is to skip the noisy data and then use the initial conditions as active parameters, to be found by using the system identification process. This paper describes the development of the equations for setting up the initial conditions as active parameters. The simulated data and response data from actual shear buildings were used to prove the accuracy of both the algorithm and the computer program, which include the initial conditions as active parameters. The numerical and experimental model analysis showed that the value of mass, stiffness and frequency were very reasonable and that the computed acceleration and measured acceleration matched very well. 相似文献
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System identification is a method for using measured data to create or improve a mathematical model of the object being tested. From the measured data however, noise is noticed at the beginning of the response. One solution to avoid this noise problem is to skip the noisy data and then use the initial conditions as active parameters, to be found by using the system identification process. This paper describes the development of the equations for setting up the initial conditions as active parameters. The simulated data and response data from actual shear buildings were used to prove the accuracy of both the algorithm and the computer program, which include the initial conditions as active parameters. The numerical and experimental model analysis showed that the value of mass, stiffness and frequency were very reasonable and that the computed acceleration and measured acceleration matched very well. 相似文献
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吴芸 《南京晓庄学院学报》2006,22(6):98-100
探讨了运用M icrosoft Excel 2003为平台,设计制作物理化学实验数据处理程序的方法,介绍了对物化实验数据进行作图、线性拟合和非线性拟合等的数据处理方法以及在物化实验教学中的应用.M icrosoft Excel 2003物化实验数据处理“程序包”具有灵活方便的数据输入、输出、编辑、保存以及良好的兼容性和易于扩充更新等特点,能大大提高实验数据处理的效率和精度,有效地消除人为数据处理的误差,提高学生计算机的应用能力. 相似文献
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Wai Chan 《Structural equation modeling》2013,20(2):326-346
In social science research, an indirect effect occurs when the influence of an antecedent variable on the effect variable is mediated by an intervening variable. To compare indirect effects within a sample or across different samples, structural equation modeling (SEM) can be used if the computer program supports model fitting with nonlinear constraints. However, such an option is not routinely available in every popular software program. In this study, the basic idea of generating covariance-equivalent models in SEM is given and a sequential model fitting method is proposed as an alternative without the need to use nonlinear constraints. Under this method, the hypothesized model is transformed into a set of successive covariance-equivalent models so that an indirect effect is reparameterized as a single model parameter in the final transformed model. Real examples are given to illustrate how the proposed method is implemented using EQS, a SEM program that currently does not support the analysis with nonlinear constraints. 相似文献