Factor analysis

#1
If I run factor analysis, I can estimate the coefficients of the factors without knowing the factors. But I am puzzled about how to determine the independent variable if I don't know the factors. Does the factor analysis give me the Y variable as well the coefficients without knowing the factors?
 

Masteras

TS Contributor
#2
you have say 20 variables which are all correltaed between them and you wish to create new uncorrelated variables but not 20, 4-5. You use factor analysis and this method groups the initilas variables in 4-5 new variables (the factors). You end up with 4-5 new variables which incorporate a lot of the information the initial 20 contained.