Alternative Equation Formats

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MathML

{\hat{σ}}^{2} = \frac{1}{(n - d)} \sum_{t = I + 1}^{n} \frac{ν_{t}^{2}}{F_{t}}

\[ \hat{\sigma }^{2} = \frac{1}{(n-d)} \sum _{t=I+1}^{n} \frac{ \nu _{t}^{2} }{F_ t} \]