Simulated variance-covariace matriz

These data reproduce the controlled simulation of variance-covariance structure of real survey based on a multivariate normal distribution. For each cluster of questions, also called "Construct", is assigned a desired level of correlation. To reproduce the correlation among several groups of questions, a chosen correlation coefficient is also assigned to the blocks of constructs.

本数据集复现了基于多元正态分布 (multivariate normal distribution) 对真实调研数据的方差-协方差结构所开展的受控模拟。每个问题簇（也称为‘构念 (Construct)’）均被赋予预设的相关水平。为复现多组问题间的相关关系，我们还为各构念块指定了选定的相关系数。