Suppose that observations on a stock price $($in dollars$)$ at the end of each of $15$ consecutive weeks are as follows:

$30\mathrm{.}2,32\mathrm{.}0,31\mathrm{.}1,30\mathrm{.}1,30\mathrm{.}2,30\mathrm{.}3,30\mathrm{.}6,33\mathrm{.}0,32\mathrm{.}9,33\mathrm{.}0,33\mathrm{.}5,35\mathrm{.}3,33\mathrm{.}7,33\mathrm{.}5,33\mathrm{.}2$

What is the estimated annualized volatility and standard error?

$20\mathrm{.}79\%$ and $\mathrm{.}0393$

$25\%$ and $4\mathrm{.}73\%$

$25\%$ and $\mathrm{.}0743$

$34\%$ and $\mathrm{.}0473$