LaTeX-examples/tikz/statistical-tests-taxonomy/statistical-tests-taxonomy.tex

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\usepackage{tikz}
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    \node[draw=white] {\hphantom{i}}
      child[sibling distance=80mm] {node {single domain}
        child[sibling distance=80mm] {node {analyze classifiers}
            child[sibling distance=40mm] {node {\parbox{2cm}{\centering predict\\classifier accuracy}}
                child[sibling distance=20mm] {node {\parbox{1.5cm}{\centering large sample\\1}}}
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            child[sibling distance=40mm] {node {\parbox{2cm}{\centering choose between classifiers}}
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                child[sibling distance=20mm] {node {\parbox{1.5cm}{\centering small sample\\4}}}}
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        child[sibling distance=80mm] {node {analyze algorithms}
            child[sibling distance=40mm] {node {\parbox{2cm}{\centering predict\\algorithm accuracy}}
                child[sibling distance=20mm] {node {\parbox{1.5cm}{\centering large sample\\5}}}
                child[sibling distance=20mm] {node {\parbox{1.5cm}{\centering small sample\\6}}}}
            child[sibling distance=40mm] {node {\parbox{2cm}{\centering choose between algorithms}}
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                child[sibling distance=20mm] {node {\parbox{1.5cm}{\centering small sample\\8}}}}
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      child[sibling distance=80mm] {node {\parbox{2cm}{\centering multiple domains\\9}}
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