RequirePackage{filecontents}
begin{filecontents}{data.dat}
X P $Q_B$ $Q_C$ $Q_D$
1 A1  2   6   7
2 A2  3   65  87
3 A3  1   45  65
4 A4  4   54  45
5 A5  6   56  34
6 A6  8   34  23
7 A7  9   45  45
8 A8  13  23  56
9 A9  4.6 6   87
 10 A10 4   56  89
 end{filecontents}

documentclass{article}
 usepackage{pgfplotstable}
 usepackage{pgfplots}
 pagestyle{empty}
 begin{document}

 pgfplotstabletypeset[columns/P/.style={string type}]{data.dat}

  vspace{1cm}

 begin{tikzpicture}
  begin{axis}[
   xlabel=Q Series,
   ylabel=P Values,
   xticklabels from table={data.dat}{P},xtick=data]
   addplot[blue,thick,mark=square*] table [y=$Q_B$,x=X]{data.dat};
   addlegendentry{$Q_B$ series}
   addplot[red,thick,mark=square*] table [y=$Q_C$,x=X]{data.dat};
  addlegendentry{$Q_C$ series}
  addplot[black,dashed,thick,mark=square*]  table [y=$Q_D$,x=X]{data.dat};
  addlegendentry{$Q_D$ series}
  end{axis}
  end{tikzpicture}

   end{document}

X P $Q_B$ $Q_C$ $Q_D$
1 A1  1/2   1/6   1/7
2 A2  1/3   65  87
3 A3  1   1/45  65
4 A4  4   54  45
5 A5  6   56  34
6 A6  8   1/4^3  23
7 A7  9   45  45
8 A8  13  23  56
9 A9  1/4.6  6   87
 10 A10 4   56  89