# SEM and Covariance Structure Analysis

"SEM (**S**tructural **E**quation **M**odeling) and Covariance Structure Analysis is the same.

The name "Covariance Structure Analysis (CSA)" is popular.
And in the
Quality study,
SEM (**S**canning **E**lectron **M**icroscope) is also important.
So I use "CSA" in this page.

Easily speaking, CSA is the mix of
Path Analysis and
Factor Analysis.

##
Pass Diagram and Structural Equation

The figure is the simple case of the pass diagram and the structural equation.

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Dealing with Error

Because real data include error(E), E is need to link the data and the equation.

Experimet by Statistical Model

NEXT Independent Component Analysis