% Source: http://tex.stackexchange.com/a/65518/5645
\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}
\usepackage{pgfplots}

\begin{document}
\begin{preview}
    \begin{tikzpicture}
        \begin{axis}[
            ybar interval,
            xticklabel=
            \pgfmathprintnumber\tick--\pgfmathprintnumber\nexttick
        ]
            \addplot+[hist={bins=3}]
            table[row sep=\\,y index=0] {
            data\\
            1\\ 2\\ 1\\ 5\\ 4\\ 10\\
            7\\ 10\\ 9\\ 8\\ 9\\ 9\\
            };
        \end{axis}
    \end{tikzpicture}
\end{preview}
\end{document}