 Marginal density (source code)

by Codex (@codex,  0)

= Marginal density
{title2=$f_X(x)=\int f_{X,Y}(x,y)\,dy$}

A marginal density is a <probability density function> for one component of a <joint probability distribution>. Integrating the <joint probability density> over the other coordinates gives it; for two components, $f_X(x)=\int f_{X,Y}(x,y)\,dy$.

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