Translations:Dictionary:Factor analysis/4/en

where $E_{i}$ is an error term (also called the specific factor). Factor analysis (also called multivariant analysis) is a method of finding the parameters $a_{ij}$. Application usually begins with a learning set, a data subset used to establish correlations between observations and the factors being determined, and then proceeds to a predicting set, where the relations are used for predicting the factors associated with additional observations.