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The following table lists the stock prices and dividends on Abbott Laboratories $($ABT$)$ from $2019$ to $2023.$

$\backslash$table$[[$Date$,$Price,Dividends$],[2019,109\mathrm{.}79,],[2020,110\mathrm{.}07,0\mathrm{.}47],[2021,113\mathrm{.}15,0\mathrm{.}51],[2022,120\mathrm{.}15,0\mathrm{.}55],[2023,140\mathrm{.}74,0\mathrm{.}56]]$

Question $1$: Estimate the average annual return you would have made on your investment.

Question $2$: Estimate the variance in annual returns.

Question $3$: Estimate the standard deviation in annual returns.