Alternative Equation Formats

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MathML

\begin{array}{rcl} {\hat{V a r}}_{h} ({\hat{N}}_{r c}) & = & \frac{n_{h} (1 - f_{h})}{n_{h} - 1} \sum_{i = 1}^{n_{h}} (n_{r c}^{h i} - {\bar{n}}_{r c}^{h})^{2} \\ n_{r c}^{h i} & = & \sum_{j = 1}^{m_{h i}} δ_{h i j} (r, c) W_{h i j} \\ {\bar{n}}_{r c}^{h} & = & (\sum_{i = 1}^{n_{h}} n_{r c}^{h i}) / n_{h} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} \widehat{\mr{Var}}_ h(\widehat{N}_{rc}) & =& \frac{n_ h(1-f_ h)}{n_ h-1} ~ \sum _{i=1}^{n_ h} {(n_{rc}^{~ hi} - \bar{n}_{rc}^{~ h})^2 } \\ n_{rc}^{~ hi} & =& \sum _{j=1}^{m_{hi}} ~ {\delta _{hij} (r,c) ~ W_{hij}} \\[0.1in] \bar{n}_{rc}^{~ h} & =& \left( \sum _{i=1}^{n_ h} ~ {n_{rc}^{~ hi}} \right) ~ / ~ n_ h \end{eqnarray*}