Alternative Equation Formats

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MathML

\begin{array}{rcl} {\hat{V}}_{h} ({\hat{R}}_{D}^{(P S)}) & = & \frac{n_{h} (1 - f_{h})}{n_{h} - 1} \sum_{i = 1}^{n_{h}} (r_{h i \cdot} - {\bar{r}}_{h \cdot \cdot})^{2} \\ r_{h i \cdot} & = & \sum_{j = 1}^{m_{h i}} {\tilde{w}}_{h i j} r_{h i j} / \sum_{h = 1}^{H} \sum_{i = 1}^{n_{h}} \sum_{j = 1}^{m_{h i}} {\tilde{v}}_{h i j} x_{h i j} \\ {\bar{r}}_{h \cdot \cdot} & = & (\sum_{i = 1}^{n_{h}} r_{h i \cdot}) / n_{h} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} \hat{V}_ h \left({\hat{R}}_ D^{(PS)}\right) & = & \frac{n_ h(1-f_ h)}{n_ h-1} ~ \sum _{i=1}^{n_ h} {(r_{hi\cdot }-\bar{r}_{h\cdot \cdot })^2} \\ r_{hi\cdot }& =& \sum _{j=1}^{m_{hi}}~ \tilde{w}_{hij} r_{hij} / \sum _{h=1}^ H\sum _{i=1}^{n_ h} \sum _{j=1}^{m_{hi}} ~ \tilde{v}_{hij} ~ x_{hij} \\ \bar{r}_{h\cdot \cdot } & =& \left( \sum _{i=1}^{n_ h}r_{hi\cdot } \right) \big / ~ n_ h \end{eqnarray*}