D Statistics

\usetikzlibrary{decorations.pathmorphing}
\begin{tikzpicture}
  \draw (-0.5,0) -- (5.5,0);
  \draw (0,0.1) -- (0,-0.1) node [anchor=north west] {0};

  \draw [double,->] (0,0) -- (0,1);
  \draw [->] (0,0) -- (0,-1);
  
  \draw [->, double, decorate, decoration={snake, amplitude=0.4mm, segment length=2mm, post length=1mm}] (5,0) -- (5,1);
\end{tikzpicture}

Figure D.1: example