Alternative Equation Formats

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MathML

\begin{array}{rcl} {\hat{V}}_{h} ({\hat{\bar{Y}}}^{(P S)}) & = & \frac{n_{h} (1 - f_{h})}{n_{h} - 1} \sum_{i = 1}^{n_{h}} (e_{h i \cdot} - {\bar{e}}_{h \cdot \cdot})^{2} \\ e_{h i \cdot} & = & (\sum_{j = 1}^{m_{h i}} {\tilde{w}}_{h i j} {\tilde{y}}_{h i j}) / {\tilde{w}}_{\cdot \cdot \cdot} \\ {\bar{e}}_{h \cdot \cdot} & = & (\sum_{i = 1}^{n_{h}} e_{h i \cdot}) / n_{h} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} \hat{V}_ h \left({\hat{\bar{Y}}}^{(PS)}\right) & = & \frac{n_ h(1-f_ h)}{n_ h-1} ~ \sum _{i=1}^{n_ h} {(e_{hi\cdot }-\bar{e}_{h\cdot \cdot })^2} \\ e_{hi\cdot }& =& \left( \sum _{j=1}^{m_{hi}} \tilde{w}_{hij} ~ \tilde{y}_{hij} \right) / \tilde{w}_{\cdot \cdot \cdot } \\ \bar{e}_{h\cdot \cdot } & =& \left( \sum _{i=1}^{n_ h}e_{hi\cdot } \right) / ~ n_ h \end{eqnarray*}