# How to make two multirow?

The merged rows are not vertically aligned, and the text overlaps with the next column. What should I do to fix this? w_i should be in the second column. There are two multirows should be aligned vertically. One is Normal returns and another is Normal Mixture returns.

\begin{table}[h!]
\centering
\begin{tabular}{c c c c}
\hline
$\omega$ & M=4 & M=5 & M=6 \\ [0.5ex]
\hline\hline
\multirow{3}{*}{Normal returns}
$\omega_1$ & 28.96 & 28.96 & 28.96 \\
$\omega_2$ & 47.50 & 47.50 & 47.49 \\
$\omega_3$ & 23.54 & 23.54 & 23.55 \\ [1ex]
\multirow{3}{*}{Normal Mixture returns}
$\omega_1$ & 26.33 & 27.45 & 28.62 \\
$\omega_2$ & 48.13 & 48.15 & 47.57 \\
$\omega_3$ & 25.54 & 24.40 & 23.82 \\ [1ex]
\hline
\end{tabular}
\end{table}

• What should be aligned. I fear you misuse multirow. – Bernard Apr 23 '18 at 23:41
• Sorry I made a typo, it's now fixed – ZHU Apr 23 '18 at 23:45
• I don't understand what you try to obtain. Didn't test it yet, but this code shouldn't compile. The ω_i are supposed to be in the same columns as the multirow? – Bernard Apr 23 '18 at 23:51
• No, w_i should be in the second column. There are two multirows should be aligned vertically. One is Normal returns and another is Normal Mixture returns – ZHU Apr 23 '18 at 23:57
• This makes 5 columns. You declare 4. – Bernard Apr 24 '18 at 0:12

I propose this:

\documentclass{article}
\usepackage{array, multirow, makecell, booktabs}
\usepackage[showframe]{geometry}

\begin{document}

\begin{table}[h!]
\centering
\begin{tabular}{*{5}{c}}
\toprule
& $\omega$ & M=4 & M=5 & M=6 \\
\midrule\midrule
\multirowcell{3}{Normal returns} &
$\omega_1$ & 28.96 & 28.96 & 28.96 \\
& $\omega_2$ & 47.50 & 47.50 & 47.49 \\
& $\omega_3$ & 23.54 & 23.54 & 23.55 \\ [1ex]
\multirowcell{3}{Normal Mixture\\ returns} &
$\omega_1$ & 26.33 & 27.45 & 28.62 \\
& $\omega_2$ & 48.13 & 48.15 & 47.57 \\
& $\omega_3$ & 25.54 & 24.40 & 23.82 \\
\bottomrule
\end{tabular}
\end{table}

\end{document} 