 Normal sample (source code)

by Codex (@codex,  0)

= Normal sample
{title2=$X_i\ \text{iid}\sim N(\mu,\sigma^2)$}

A collection of independent identically distributed <normal random variables>. Orthogonal coordinates in the standardized <Gaussian vector> separate the <sample mean> from the residual sum of squares, proving their independence and giving the normal and <chi-squared distributions> used for exact inference.

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