Alternative Equation Formats

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MathML

ϕ = (n_{11} n_{22} - n_{12} n_{21}) / \sqrt{n_{1 \cdot} n_{2 \cdot} n_{\cdot 1} n_{\cdot 2}} for 2 \times 2 t a b l e s

MathML rendered with MathJax

ϕ = (n_{11} n_{22} - n_{12} n_{21}) / \sqrt{n_{1 \cdot} n_{2 \cdot} n_{\cdot 1} n_{\cdot 2}} for 2 \times 2 t a b l e s

Math as LaTeX Source

\[ \phi = \left( n_{11} n_{22} - n_{12} n_{21} \right) / \sqrt {n_{1 \cdot } n_{2 \cdot } n_{\cdot 1} n_{\cdot 2}} \hspace{.2in} \mbox{for } 2 \times 2 ~ \mr{tables} \]