Question $3$

The following table shows the one$-$year return distribution of Startup, Inc.

Calculate

$($a$)$ The expected return$=$

$($b$)$ The standard deviation of the return$=$

$($Please express the values as percentages and keep two digits after the decimal point e$.$g$,$

$1\mathrm{.}23\%.$ Note: if your answer is $1\mathrm{.}23\%,$ please just enter $1\mathrm{.}23$ in the blank.$)$