The difference between exogenous variables and endogenous variables

The difference between exogenous variables and endogenous variables: 1. Endogenous variables refer to the variables to be determined by the model and can be explained within the model system, while exogenous variables are determined outside the economic system and entered into the system variables cannot be explained in the model system; 2. Endogenous variables are determined by the model system, while exogenous variables only affect the system and are not affected by the system.

The difference between exogenous variables and endogenous variables:

1. Different subjects

1. Endogenous variables: refer to the variables to be determined by the model. can be explained within the model system.

2. Exogenous variables: variables determined externally to the economic system and entered into the system, which cannot be explained in the model system.

2. Different characteristics

1. Endogenous variable: a random variable with a certain probability distribution, its parameters are estimated by a system of simultaneous equations element.

2. Exogenous variables: can affect endogenous variables, but they themselves are variables determined by external factors that are constantly studied by economic models. This variable can usually be controlled by policy and used as a variable for the government to achieve its policy goals.

3. Different rules

1. Endogenous variables: are determined by the model system.

2. Exogenous variables: they only affect the system but are not affected by the system.

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