Question

Explain why an error variable is added to the regression model. Distinguish between the error term (u) and the residual (û).

02 Mar 2026
Answer :
Word Count : 250
An error variable is added to the regression model to account for the factors that influence the dependent variable but are not explicitly included among the explanatory variables. In real-world situations, it is impossible to include every relevant determinant of an economic outcome due to limitations of data, measurement errors, __________ _________ _____ ____ __________ ____ _______ __________ ____ ___.
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