The estimated parameters are used to calculate the inverse Mills ratio, which is then included as an additional explanatory variable in the OLS estimation.
32.
If Huntington's imperatives are the independent variables, then the variable of civilian control becomes in turn an explanatory variable for military security.
33.
Where " c i " is the unobserved effect and " x it " contains only time-varying explanatory variables.
34.
In the second stage, the researcher corrects for self-selection by incorporating a transformation of these predicted individual probabilities as an additional explanatory variable.
35.
One major use of PCR lies in overcoming the multicollinearity problem which arises when two or more of the explanatory variables are close to being collinear.
36.
If the data show sufficient variation in the hypothesized explanatory variable of interest, its effect if any upon the potentially influenced variable can be measured.
37.
Multiple regression analysis across countries has shown that income levels and educational attainment are identified as providing the most powerful explanatory variables for ICT access and usage.
38.
"' Multicollinearity "'refers to a situation in which two or more explanatory variables in a multiple regression model are highly linearly related.
39.
In a scientific theory, particularly within psychology, a "'hypothetical construct "'is an explanatory variable which is not directly observable.
40.
Economists are often faced with a high number of often highly collinear potential explanatory variables, leaving researcher bias to play an important role in their selection.
