Alternative Equation Formats

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MathML

\sum_{i = 1}^{n} w_{i} {(y_{i} - x_{i}^{'} β)}^{2} = \sum_{i = 1}^{n} w_{i} e_{i}^{2}

\[ \sum _{i=1}^{n} w_ i \left( y_ i - \mb{x}_ i'\bbeta \right)^2 = \sum _{i=1}^{n} w_ i e_ i^2 \]