wording (ibm model 1)

Chapter5/Figures/figure-calculation-of-the-expected-frequency-1.tex

@@ -3,5 +3,5 @@
 	\multicolumn{1}{c|}{$x_1$} & 2        \\
 	\multicolumn{1}{c|}{$x_2$} & 1        \\
 	\multicolumn{1}{c|}{$x_3$} & 5        \\ \hline
-	\multicolumn{2}{c}{$c_{\mathbb{E}}(X)=8$}         
+	\multicolumn{2}{c}{总频次$=8$}         
 \end{tabular}