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MathML

G F I = 1 - \frac{T r ((W_{r}^{- 1} (S_{r} - \hat{Σ_{r}}))^{2}) + δ_{r} ({\bar{x}}_{r} - \hat{u_{r}})^{'} W_{r}^{- 1} ({\bar{x}}_{r} - \hat{u_{r}})}{T r ((W_{r}^{- 1} S_{r})^{2}) + δ_{r} {\bar{x}}_{r}^{'} W_{r}^{- 1} {\bar{x}}_{r}}

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Math as LaTeX Source

\[ \mr{GFI} = 1 - \frac{\mr{Tr}( (\mb{W}_ r^{-1}(\mb{S}_ r - \hat{\bSigma _ r}))^2)+\delta _ r(\mb{\bar{x}}_ r-\hat{\mb{u}_ r})^\prime \mb{W}_ r^{-1}(\mb{\bar{x}}_ r-\hat{\mb{u}_ r})}{\mr{Tr}( (\mb{W}_ r^{-1}\mb{S}_ r)^2 )+\delta _ r\mb{\bar{x}}_ r^\prime \mb{W}_ r^{-1}\mb{\bar{x}}_ r} \]