Alternative Equation Formats

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MathML

w_{j} = {\begin{cases} 1 & for observations in the treated group \\ \frac{p_{j}}{1 - p_{j}} & for observations in the control group \end{cases}

Math Rendered as SVG

Math as LaTeX Source

\[ w_ j = \left\{ \begin{array}{ll} 1 & \mbox{for observations in the treated group} \\ \frac{p_ j}{1-p_ j} & \mbox{for observations in the control group} \end{array} \right. \]