Alternative Equation Formats

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MathML

s = \sqrt{\frac{1}{d} \sum_{i = 1}^{n} (x_{i} - \bar{x})^{2}}

s = \sqrt{\frac{1}{d} \sum_{i = 1}^{n} (x_{i} - \bar{x})^{2}}

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