In the chapter opener, we learned about Coca$-$Cola and Fevertree. Following are the returns offered by Fevertree and Coca$-$Cola from $2014$ to $2019.$ What aspect of Fevertree's return would indicate that it is more volatile than Coca$-$Cola?

Return

$\backslash$table$[[,$Coca$-$Cola,$],[2015,13\mathrm{.}61\%,$Fevertree$],[2016,11\mathrm{.}92\%,51\mathrm{.}16\%],[2017,2\mathrm{.}34\%,215\mathrm{.}50\%],[2018,13\mathrm{.}56\%,12\mathrm{.}70\%],[2019,17\mathrm{.}92\%,91\mathrm{.}30\%],[,,-1\mathrm{.}90\%]]$

Further, calculate the average return for both Fevertree and Coca$-$Cola. Which performed better during this period? If you had invested $1,000$ in each of these stocks, how much money would you have at the end of $2019?$ Calculate the standard deviation of both firms' returns. Which of these is more volatile?