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| revprev | Admin | Jun 14'24 at 23:18 | −232 | ||
| 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> If <math>X</math> and <math>Y</math> are any two random variables, then the '' covariance'' of <math>X</math> and <math>Y</math> is defined by {\rm Cov}<math>(X,Y) = E((X - E(X))(Y - E(Y)))</math>. Note that {\rm Cov}<math>(X,X) = V(X)</math>. S...") | Jun 9'24 at 4:24 | +700 |