Alternative Equation Formats

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MathML

\begin{aligned} n^{⋆} & = number of observations in data set \\ y_{i} & = value of i th observation, i \in {1, \dots, n^{⋆}} \\ f_{i} & = frequency of i th observation, i \in {1, \dots, n^{⋆}} \\ w_{i} & = weight of i th observation, i \in {1, \dots, n^{⋆}} \\ n & = sample size = \sum_{i}^{n^{⋆}} f_{i} \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} n^\star & = \mbox{number of observations in data set} \\ y_ i & = \mbox{value of }i\mbox{th observation,} \; \; i \in \{ 1, \ldots , n^\star \} \\ f_ i & = \mbox{frequency of }i\mbox{th observation,} \; \; i \in \{ 1, \ldots , n^\star \} \\ w_ i & = \mbox{weight of }i\mbox{th observation,} \; \; i \in \{ 1, \ldots , n^\star \} \\ n & = \mbox{sample size} = \sum _ i^{n^\star } f_ i \end{align*}