Respuesta :
When the effect of one independent variable on the dependent variable changes at the different levels of another independent variable is called Main effect Interaction effect.
What is interaction effect?
The function of a variable in an estimated model and its impact on the dependent variable are referred to as interaction effects. Depending on the value of some third variable, a variable with an interaction effect will have a distinct impact on the dependent variable. For instance, increasing the dosage of a medication for hypertension may result in greater blood pressure reductions over time, but the benefit may be greater for smokers than for non-smokers as the dosage increases.
When one independent variable's effect varies according on the value of another independent variable, there is interaction. The effect of one independent variable is not the same at all levels of the other independent variable, to put it another way.
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