One of the reliable scientifi c methods for studying internal
structure of set of index and measuring construal validity
is confi rmatory factor analysis which estimating factor
loadings and relations’ between a set of index and factors.
Factorial load is the indicator of correlation with related
factor that is defi ned like each type the other correlation
according to this the more an indicator getting bigger in a
factor, the factor should gain a more weight (Pavel, 2002)
in this chapter the indicators are relevant to each one of
variants according the factories analysis results is shown
in fi gure of 1, being tested.