Alternative Equation Formats

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MathML

α r = { n h r 1 n h r for a stratified design R 1 R for designs without stratification

MathML rendered with MathJax

α r = { n h r 1 n h r for a stratified design R 1 R for designs without stratification

Math as LaTeX Source

\[ \alpha _ r = \left\{ \begin{array}{ll} \frac{ n_{h_ r} -1 }{n_{h_ r}} & \text {for a stratified design} \\[0.1in] \frac{R-1}{R} & \text {for designs without stratification} \end{array} \right. \]