Exercise $1$: find the total return $($in percent$)$ of a stock with $Pt,Pt+1,$ and dividend payment shown below

Exercise $2$: find the average return, variance, and standard deviation for a stock with returns over the years as shown below

$\backslash$table$[[$year$,$return $(\%)],[1926,12],[1927,40],[1928,22],[1929,-5],[1930,10]]$

average return $=$

$15\mathrm{.}8$

$276\mathrm{.}20$

$16\mathrm{.}62$

Exercise $3$: find the arithmetic return and compare it to the geometric return for the stock returns shown below

$\backslash$table$[[$year$,$return $(\%),$factor$],[1926,40,],[1927,22,5],[1928,-5,],[1929,10,]]$

arithmetic return $=$

$16\mathrm{.}75$

geometric return $=$

$1\mathrm{.}78$