Download the following file of monthly stock market returns over the period $192607$ to $202401$: pset $3$ return data.xlsx darr

This is what the first few lines of the file looks like:

A$1$

Month

$\backslash$table$[[,$A$,$B$,$C$,$D$,$E$],[1,$Month,Market retu,,,$],[2,192607,3\mathrm{.}18,,,],[3,192608,2\mathrm{.}89,,,],[4,192609,0\mathrm{.}59,,,],[5,192610,-2\mathrm{.}92,,,],[6,192611,2\mathrm{.}84,,,],[7,192612,2\mathrm{.}9,a,,],[8,192701,0\mathrm{.}19,,4,],[9,192702,4\mathrm{.}44,,,],[10,192703,0\mathrm{.}43,,,],[11,192704,0\mathrm{.}71,,,],[12,192705,5\mathrm{.}74,,,],[13,192706,-2\mathrm{.}08,,,]]$

For the questions below, use the full sample in this file.

Compute the mean monthly market return over this sample $($express answer in percentage terms rounded off to the nearest one$-$hundreths$)$

What is the standard deviation of monthly returns over this sample $($express your answer in percentage terms rounded off to nearest tenth of a percent$)$