Alternative Equation Formats

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MathML

f_{Pooled Stratum} = {\begin{array}{ll} 0 & if any of f_{h_{l}} = 0 where l = 1, 2, \dots, c \\ {(\sum_{l = 1}^{c} n_{h_{l}} f_{h_{l}}^{- 1})}^{- 1} \sum_{l = 1}^{c} n_{h_{l}} & otherwise \end{array}

Math Rendered as SVG

Math as LaTeX Source

\[ f_{\mbox{Pooled Stratum}}= \left\{ {\begin{array}{ll} 0 & \mbox{if any of } f_{h_ l}=0 \mbox{ where } l=1, 2, \ldots , c \\ {\displaystyle \left( \sum _{l=1}^ c n_{h_ l}f_{h_ l}^{-1} \right)^{-1} \sum _{l=1}^ c n_{h_ l}} & \mbox{otherwise} \end{array} } \right. \]