The error term is homoskedastic if a. $\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)$ is constant for $i = 1 , \ldots , n$
b. $\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)$ depends on $x$
c. $X _ { i }$ is normally distributed
d. there are no outliers.

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The Answer of The error term is homoskedastic if a. $\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)$ is constant for $i = 1 , \ldots , n$
b. $\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)$ depends on $x$
c. $X _ { i }$ is normally distributed
d. there are no outliers.

The Error Term Is Homoskedastic If A var⁡(ui∣Xi=x)\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)var(ui​∣Xi​=x)

The Error Term Is Homoskedastic If A $\operatorname { var } \left( u _ { i } \mid X _ { i } = x \right)$