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# What are exogenous and endogenous variables?

Updated: 10/31/2022

Wiki User

11y ago

Endogenous variables are those that are characteristic of the system under primary study. Exogenous variables are those that may be acting on the system under study. For example, if a scientist is studying patients with migraines then she might measure heights, weights, headache severity and frequency, etc as endogenous variables and food intakes, weather conditions, stress levels, etc as exogenous variables.

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11y ago

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Q: What are exogenous and endogenous variables?
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### Define and differentiate between endogenous and exogenous variables?

The endogenous variables value is established by the conditions of the other variables in the structure. The exogenous variables value in independent of the conditions of the other variables in the structure. The difference between the endogenous and exogenous variables is the endogenous depends solely on the structure and the exogenous depend on outside elements.

### What are the Difference between endogenous and exogenous variables?

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.

### 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.

### What are the different types of variables?

The exogenous ones, which are set by an outside agent, and the endogenous ones, which occur inside a problem. So if you look at this formula for a wave in one dimension: y = exp(-jkx), where k = 2pi / lambda lambda and x are exogenous while k is endogenous (j and pi are constants).

### When b cells secrete antibodies does it fight against endogenous or exogenous pathogens?

exogenous pathogens.

endogenous

### What is the difference between predetermined and exogenous variables?

Predetermined variables are determined by factors in the past and cannot be changed, while exogenous variables are determined by factors outside the model being analyzed. Predetermined variables are considered to be endogenous in the context of a model, while exogenous variables are considered to be exogenous.

### What is the difference between an endogenous disease and and an exogenous disease?

Endogenous disease is when the cause is within the body and not outside the body.(eg. appendicitis) Exogenous disease has trigger source outside the body. (eg. infections)

### What is the difference between an endogenous disease and exogenous disease?

Endogenous disease is when the cause is within the body and not outside the body.(eg. appendicitis) Exogenous disease has trigger source outside the body. (eg. infections)

### What is the difference between an endogenous disease and an exogenous disease?

Endogenous disease is when the cause is within the body and not outside the body.(eg. appendicitis) Exogenous disease has trigger source outside the body. (eg. infections)

### What is the difference between a exogenous depression and endogenous depression?

Endogenous is internal, biological and somatic Exogensous is externally caused - environmental

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