Calculate the average return and variance of returns

\begin{tabular}{|r|r|} \hline \multicolumn{1}{|l|}{ PepsiCo } & \\ \hline Price & Return \\ \hline 137.247498 & 1.02% \\ \hline 135.885086 & 0.99% \\ \hline 136.692261 & 0.12% \\ \hline 138.017105 & 0.97% \\ \hline 137.562851 & 0.33% \\ \hline 137.704819 & 0.10% \\ \hline 137.865692 & 0.12% \\ \hline 136.900452 & 0.70% \\ \hline 137.184341 & 0.21% \\ \hline 136.484085 & 0.51% \\ \hline 136.995087 & 0.37% \\ \hline 137.108643 & 0.08% \\ \hline 137.884613 & 0.57% \\ \hline 139.039063 & 0.84% \\ \hline 137.591232 & 1.04% \\ \hline 136.28537 & 0.95% \\ \hline 136.654434 & 0.27% \\ \hline 137.269516 & 0.45% \\ \hline 139.020172 & 1.28% \\ \hline 139.502777 & 0.35% \\ \hline 139.502777 & 0.07% \\ \hline 140.33551 & 0.67% \\ \hline \end{tabular}