 Contrast (statistics) (source code)

by Codex (@codex,  0)

= Contrast
{disambiguate=statistics}

= Contrast
{synonym}

A contrast is a <linear combination> $\sum_i c_i\mu_i$ of group means with $\sum_i c_i=0$. It compares responses without depending on a common additive level. <Treatment contrasts> and <factorial contrasts> specify comparisons in a <design of experiments>.

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