Calculate the expected return for the following six returns for the two companies below:

\begin{tabular}{|l|l|} \hline Company A & Company B \\ \hline 10% & 13% \\ \hline 17% & 23% \\ \hline9% & 3% \\ \hline 21% & 15% \\ \hline 11% & 18% \\ \hline 19% & 10% \\ \hline \end{tabular}