Alternative Equation Formats

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MathML

\frac{1}{d} \sum_{i = 1}^{n} w_{i} (x_{i} - {\bar{x}}_{w})^{2}

\frac{1}{d} \sum_{i = 1}^{n} w_{i} (x_{i} - {\bar{x}}_{w})^{2}

\[ \frac{1}{d} \sum ^ n_{i=1} w_ i (x_ i-{\bar{x}}_ w)^2 \]