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cancel votes answer views multiplication by centering matrix let $x_ , x_ , ... , x_n$ be a random sample from some population. define $s^ = rac{ }{n- } \sum_{i= }^{n}(x_i - ar{x})^ $ let $\mathbf{x} = [x_ x_ ... x_n]^t$ and c be the n-by-n ... linear-algebra statistics vectors asked hours ago pame silver
asked hours ago nik votes answers views value of $ec{ac}\cdot ec{bd}$ if $a,b,c,d$ be $ $ points in a space and satisfy $|ec{ab}|= ,|ec{bc}|= ,|ec{cd}|= ,|ec{da}|= ,$ then value of $ec{ac}\cdot ec{bd}=$ what i try let position vector of $a( )\;,\;b(ec{... vectors asked hours ago jacky gold badges silver...
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