Solve the Problem $\begin{array}{lllllll}-3 & -1 & 2 & 1 & 0 & 0 & 1 \\8 & 0 & 1 & 3 & -1 & 0 & 0\end{array}$

Solve the problem.
-In an analysis of the accuracy of weather forecasts, the actual high temperatures are compared to the high temperatures predicted one day earlier and the high temperatures predicted one week earlier. Listed below are the errors between the predicted temperatures and the actual high temperatures for consecutive days in North Town. Do the standard deviations suggest that the temperatures predicted a day in advance are more accurate than those predicted a week in advance? (actual high) - (high predicted one day earlier)
$\begin{array}{lllllll}-3 & -1 & 2 & 1 & 0 & 0 & 1 \\8 & 0 & 1 & 3 & -1 & 0 & 0\end{array}$

(actual high) - (high predicted one week earlier)
$\begin{array} { l l l l l l l } - 7 & 3 & 8 & 0 & 4 & 3 & - 1 \end{array}$
$\begin{array} { l l l l l l l } - 3 & 1 & 4 & 1 & 3 & 0 & 2 \end{array}$