\begin{Schunk}
\begin{Sinput}
 var(X)
\end{Sinput}
\begin{Soutput}
          [,1]       [,2]      [,3]      [,4]
[1,] 0.9422976  0.8845368  4.166469  2.572029
[2,] 0.8845368  3.9215809 -1.616552  0.201467
[3,] 4.1664686 -1.6165519 46.590962  6.564746
[4,] 2.5720286  0.2014670  6.564746 14.987849
\end{Soutput}
\end{Schunk}
