Question: Why and when do researchers use factor analysis? Some examples please. How does factor analysis differ from cluster analysis? When running a regression analysis, there

Why and when do researchers use factor analysis? Some examples please.

How does factor analysis differ from cluster analysis?

When running a regression analysis, there are several ways to find a regression line that fits data.the method of least square is one of them. What is it? How does it work? What is the benefit of this method?

What is multicollinearity? Why is this important when running a regression analysis? How can you solve this issue?

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