Alternative Equation Formats

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MathML

\frac{1}{n} \sum_{i = 1}^{n} {(\frac{y_{i} - \bar{y}}{s})}^{4} - 3

${\displaystyle \frac{1}{n} \sum _{i=1}^ n \left( \frac{y_ i-\bar{y}}{s} \right)^4 - 3}$