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关 键 词：lisrel正版软件学习
行 业：IT 软件 双机容错与集群软件
发布时间：2021-11-19
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. Introduction
In practice, many multivariate data sets contain missing values. These missing values may result from nonresponses in a survey, absenteeism of participants in a longitudinal study, etc. The traditional way of dealing
with these missing data values is to use list wise deletion to generate a data set that only contains the complete
data cases. However, list wise deletion may result in a very small data set. It is a well-known fact that most
multivariate statistical methods require a large sample size, especially if the number of observed variables is
large. Consequently, alternative statistical methods for dealing with data with missing values are of interest.
Multiple Imputation (MI) and Full Information Maximum Likelihood (FIML) estimation are two popular
statistical methods for dealing with data with missing values. Both these methods are available in LISREL
(Jöreskog & Sörbom 2003). The Multiple Imputation module of LISREL implements the Expected
Maximization (EM) algorithm and the Markov Chain Monte Carlo (MCMC) method for imputing missing
values in multivariate data sets. Technical details of these methods are available in Schafer (1997) and Du
Toit & Du Toit (2001). Supplementary notes on these methods are also provided by Du Toit & Mels (2002).
In this note, the Multiple Imputation and FIML methods for data with missing values of LISREL are illustrated
by fitting a measurement model to a multivariate data set consisting of the scores of a sample of girls on six
psychological tests. This data set is described in the next section. The measurement model is described in
section 3. Thereafter, the method of Multiple Imputation is used to fit the measurement model to the data set
for girls. In section 5, the measurement model is fitted to the girls’ data by means of the FIML method
The results
The results are written to the output file, SEM.OUT, which consists of several sections. In this section, we
will review some selections of this output file. The sample covariance matrix is shown in the following
text editor window
LISREL provides tools for structural equation modeling, data manipulations and basic statistical analyses, hierarchical and non-linear modeling, generalized linear modeling, and generalized linear modeling for multilevel data.
PRELIS
数据处理
数据转换
数据生成
计算矩阵
计算样本矩的渐近协方差矩阵
归责的匹配
多重估算
多元线性回归分析
Logistic回归
单变量多元删失回归
ML和MINRES探索性因子分析
MULTILEV
MULTILEV拟合简单随机和复杂调查设计中的多级线性和非线性模型到多级数据。它允许具有连续和明确的响应变量的模型。
PRELIS is a 64-bit application for data manipulation, data transformation, data generation, computing moment matrices, computing estimated asymptotic covariance matrices of sample moments, imputation by matching, multiple imputation, multiple linear regression, logistic regression, univariate and multivariate censored regression, and ML and MINRES exploratory factor analysis.
MULTILEV is a 64-bit application that fits multilevel linear and nonlinear models to multilevel data from simple random and complex survey designs. It allows for models with continuous and categorical response variables.
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