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Quadratic Regression Model
A nonlinear regression function that includes X and X^2 as regressors TERM 2
Nonlinear Regression Model
DEFINITION 2 A regression function with a slope that is NOT constant TERM 3
Polynomial Regression Model
DEFINITION 3 A nonlinear regression function that includes X, X^2,....and X^y as regressors. R is an integer TERM 4
Cubic Regression Model
DEFINITION 4 A nonlinear regression function that includes X, X^2, X^3 as Regressors TERM 5
Elasticity
DEFINITION 5 In economics, elasticity is the measurement of how changing one economic variable affects others. For example:
Natural Logarithm
Has a base of e. If e^b=x, then b is the log of x. A log is the exponent that a base must be raised to equal a certain value. (From web)The natural logarithm is the logarithm to the base e, where e is an irrational and transcendental constant approximately equal to 2.718281828. The natural logarithm is generally written as ln x , loge x or sometimes, if the base of e is implicit, as simply log x. TERM 7
Linear-Log model
DEFINITION 7 A nonlinear regression function in which the dependent variable is Y and the independent variable is ln(X). TERM 8
Log-Linear model
DEFINITION 8 A nonlinear regression function in which the dependent variable is ln(Y) and the independent variable is X.(From web) A log-linear model is a mathematical model that takes the form of a function whose logarithm is a first-degree polynomial function of the parameters of the model, which makes it possible to apply linear regression. TERM 9
Log-Log model
DEFINITION 9 A nonlinear regression function in which the dependent variable is ln(Y) and the independent variable is ln(X). TERM 10
Interaction Term
DEFINITION 10 A regressor that is formed as the product of two other regressors, such as X1i 3 X2i.Education + Gender = EducGender
