LaTeX.org

Thanks for the help, ill be more careful posting the code the next time. Thanks again mas and svend I really appreciate it.

Hello,
I'm a new user of latex and I'm having some serious issues trying to make a table, so far I have this:

\begin{center}
\scalebox{0.7}{%
\begin{tabular}{c|c|c|c|c|c}
\multicolumn{1}{c}{}&
\multicolumn{4}{|c|}{Calidad firma j}\\
\hline
&1 & 2 & $\cdots$ & $\rho^{max}$ \\
\hline
1&$1,00$ $1,00 ...