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| In econometrics, '''homoskedasticity''' is an assumption about data used for statistical inference. | '''Homoskedasticity''' means that the variance of the error term is constant and not correlated to any treatment or control variable. |
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| It can also be useful to express exogeneity as a [[Statistics/ConditionalExpectations|conditional expectation]] like: {{attachment:cond.svg}} |
Homoskedasticity
Homoskedasticity means that the variance of the error term is constant and not correlated to any treatment or control variable.
Contents
Meaning
Homoskedasticity means that the variance of the error term is constant and not correlated to any treatment or control variable.
The opposite condition is heteroscedasticity.
It can also be useful to express exogeneity as a conditional expectation like:
