How can we write the system GMM model (mathematical equation)?
The system GMM model can be expressed mathematically as:
\[Y_t = \alpha + \beta X_t + \epsilon_t\]
where:
- \(Y_t\) is the dependent variable.
- \(X_t\) is the matrix of explanatory variables.
- \(\alpha\) is the intercept term.
- \(\beta\) is the coefficient vector.
- \(\epsilon_t\) is the error term.
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