# Rank condition

The rank condition is a necessary and sufficient condition for a set of simultaneous equations in an econometric system to allow identification of all its parameters from the estimated coefficients of the reduced form equations.wikipedia

9 Related Articles

### Parameter identification problem

**identificationidentification problemidentified**

The rank condition is a necessary and sufficient condition for a set of simultaneous equations in an econometric system to allow identification of all its parameters from the estimated coefficients of the reduced form equations.

The rank condition is a necessary and sufficient condition for identification.

### Order condition

**first order condition**

* Order condition

However, a stronger argument is the rank condition which is both necessary and sufficient for identification.

### Necessity and sufficiency

**necessary conditionnecessary and sufficient conditionsufficient condition**

The rank condition is a necessary and sufficient condition for a set of simultaneous equations in an econometric system to allow identification of all its parameters from the estimated coefficients of the reduced form equations.

### System of equations

**simultaneous equationssystems of equationssimultaneous equation**

The rank condition is a necessary and sufficient condition for a set of simultaneous equations in an econometric system to allow identification of all its parameters from the estimated coefficients of the reduced form equations.

### Econometrics

**econometriceconometricianeconometric analysis**

### Parameter

**parametersparametricargument**

### Reduced form

**reduced-form**

### Matrix (mathematics)

**matrixmatricesmatrix theory**

The condition simply requires the matrix of all structural equations of the model to have full rank.

### Rank (linear algebra)

**rankcolumn rankfull rank**

The condition simply requires the matrix of all structural equations of the model to have full rank.