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enter image description here

How to plot the picture above?

This question is about;

  • plotting a chi-square distribution
  • shading an area of distribution
  • annotating the figure
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  • 2
    what you try so far? now it seems as "do-it-instead-me", which likely will not be answered. do you have table for chi.square function? – Zarko Jan 6 '18 at 17:05
  • why you move your image into link? this is not help us to help you. – Zarko Jan 6 '18 at 17:06
  • This might get closed (though there are plenty of questions like this that do get answers), but you can look at tex.stackexchange.com/a/40916 for a way of plotting a chi-squared distribution, and you can look at the fillbetween library of pgfplots to do the filled part on the right. – Torbjørn T. Jan 6 '18 at 18:42
  • For the record: This is a second attempt to ask "the same" question. The first attempt is tex.stackexchange.com/q/409088/95441. – Stefan Pinnow Jan 6 '18 at 18:52
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\documentclass[pstricks]{standalone}
\usepackage{pst-func}

\begin{document}

\psset{xunit=1.2cm,yunit=15cm,plotpoints=200}
\begin{pspicture*}(-0.75,-0.1)(10,0.35)
\pscustom[fillstyle=solid,fillcolor=red!30,linestyle=none]{%
    \psline(6,0)(6,0.06)
    \psChiIIDist[linewidth=1pt,linecolor=red,nue=3.5]{6}{9}
    \psline(9,0)
}
\psline(6,-0.01)(6,0.2)
\psChiIIDist[linewidth=1.5pt,linecolor=red,nue=3.5]{0.01}{9}
\psaxes[Dy=0.1,labels=none,ticks=none]{->}(0,0)(9.5,0.3)
\pcline[nodesepB=5pt]{<-}(0,0.15)(6,0.15)\ncput*{\footnotesize Not Refecting of $H_0$}
\pcline[nodesepA=5pt]{->}(6,0.15)(9.5,0.15)%
  \ncput*{\footnotesize\shortstack{Refecting\\Region of\\$H_0$}}
\rput(6,-0.025){\footnotesize Critical $\chi^2=2.547$}
\rput(8,-0.05){\footnotesize Calculated $\chi^2=5.147$}
\psline{->}(8,-0.03)(8,0)
\psframe*[linecolor=black,opacity=0.1](-0.75,-0.1)(10,0.35)
\end{pspicture*}

\end{document}

enter image description here

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