Formelsamlingen
Formelsamlingen
Formelsamlingen
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KovariansenCOVAR(X, Y)=1nn∑i=1(X -MX)(Y-MY)Z=X+YVAR(X + Y) =VAR(X)+ 2COVAR(X,Y)+VAR(Y)−VAR( X ) VAR(Y ) ≤ COVAR(X , Y ) ≤ VAR(X ) VAR(Y )StandardafvigelsenSD ( X ) = VAR(X)3