Created
December 19, 2020 11:30
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\documentclass{standalone} | |
\usepackage[francais]{babel} | |
\usepackage[utf8]{inputenc} | |
\usepackage[T1]{fontenc} | |
\usepackage{amsmath} | |
\begin{document} | |
\begin{tabular}{c} | |
\begin{tabular}{r|c|c|} | |
\strut&test $+$&test $-$\\\hline | |
signal $+$&$N_{++}$: « vrai $+$ »&$N_{+-}$: « faux $-$ »\\\hline | |
signal $-$&$N_{-+}$: « faux $+$ »&$N_{--}$: « vrai $-$ »\\\hline | |
\end{tabular} | |
\\[.8cm] | |
\begin{tabular}{c|c} | |
\hline | |
« sensibilité »: $\frac{\text{vrai $+$}}{\text{signal $+$}}=\frac{N_{++}}{N_{++}\,+\,N_{+-}}$& | |
« spécificité »: $\frac{\text{vrai $-$}}{\text{signal $-$}}=\frac{N_{--}}{N_{--}\,+\,N_{-+}}$ | |
\\\hline | |
« val.préd.pos. »: $\frac{\text{vrai $+$}}{\text{test $+$}}=\frac{N_{++}}{N_{++}\,+\,N_{-+}}$& | |
« val.préd.nég. »: $\frac{\text{vrai $-$}}{\text{test $-$}}=\frac{N_{--}}{N_{--}\,+\,N_{+-}}$ | |
\end{tabular} | |
\\\hline | |
« prévalence »: $\frac{\text{signal $+$}}{\text{total}}=\frac{N_{++}\,+\,N_{+-}}{N_{++}\,+\,N_{+-}\,+\,N_{-+}\,+\,N_{--}}$ | |
\end{tabular} | |
\end{document} |
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