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Endogenous variables are important in econometrics and economic modeling because they show whether a variable causes a particular effect. Economists employ causal modeling to explain outcomes (dependent variables) based on a variety of factors (independent variables), and to determine to which extent a result can be attributed to an endogenous or exogenous cause.
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What is the difference between exogenous and enodgenous variables?
'''Exogenous''' (or exogeneous) (from the [[wiki/Greek language|Greek]] words "exo" and "genis", meaning "outside" and "generated") refers to an action or object coming from outside a system. It is the opposite of [[wiki/Endogenous|endogenous]], something generated from within the system.
Distinguish between endogenous and exogenous variable?
Endogenous variable is a variable which used in economics for inner side parameters and accelerator coefficient of movement. andExogeneous is outside parameters as taxation,tariff,govt revenues e.t.c
What is the difference between endogenous and exogenous?
1-Endogenous antigens(En.A) originate by the multiplication of pathogen inside the antigen presenting cell, such as pathogen is intracellular multiply in cytoplasm. 2-En.A presented via M.H.C1 molecule recognized by the CD8 and T-lymphocytes. 3-It includes viral and tumor antigens. 1-Exogenous antigens (Ex.A) originates outside and taken by antigen presenting cells when extracellular pathogen are engulfed and kill inside the phagolysosome. 2-Ex.A presented via M.H.C2 molecule recognized by CD4 and T-Lymphocytes. 3-It includes allergens,bacteria structures (like capsule, flagella e.t.c).
What is the difference between variables and rules?
a variable changes a rule doesnt.
What is the difference between internal and external validity?
The difference between internal and external validity is in their nature. Internal validity indicates if a study depicts relation between two variables. External validity on the other hand generalizes the study of the variables.
