Question

What is the difference between exogenous and endogenous variables?

Answer 1

Exogeneous Values	Endogenous Values
Exogeneous values are independent values in a model	Endogenous values are dependent on other physical quantities in the model.
Exogeneous Values are fixed in a system and cannot be altered externally.	Endogenous values can be altered externally to produce desired results
Example: in agriculture as a model, rainfall cannot be controlled by us and hence is a exogenous value.	Example: In agriculture, the amount of pesticides and fertilizers can be controlled by us, hence they are endogenous values.