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# Implication of Zero Mean Assumption

EMETRC-TEYFEK

Let's suppose you are estimating the following model, where monthly saving depends upon income:

$$savings = \beta_{0} + \beta_{1} income + u$$

The assumption $E(u|x) = 0$ implies:

A

$E(savings|income) = \beta_{0} income$

B

$E(savings|income) = \beta_{1} income$

C

$E(savings|income) = \beta_{0} + \beta_{1} income + u$

D

$E(savings|income) = \beta_{0} + \beta_{1} income$