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| revprev | Admin | Jun 14'24 at 23:43 | −211 | ||
| revcur | Bot | (Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> Let <math>X</math> and <math>Y</math> be random variables. The ''covariance'' <math>\rm {Cov}(X,Y)</math> is defined by (see Exercise \ref{sec 6.2}.) <math display="block"> \rm {cov}(X,Y) = E ((X - \mu(X))(Y -...") | Jun 9'24 at 4:25 | +813 |