The variance of the error variable $\sigma _ { z } ^ { 2 }$ is required to be constant.When this requirement is satisfied,the condition is called homoscedasticity.

Name: The variance of the error variable $\sigma _ { z } ^ { 2 }$ is required to be constant.When this requirement is satisfied,the condition is called homoscedasticity.
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True. Homoscedasticity requires the variance of the error variable to be constant across all levels of the independent variable(s).

The Variance of the Error Variable σz2\sigma _ { z } ^ { 2 }σz2​

The Variance of the Error Variable $\sigma _ { z } ^ { 2 }$