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In the output, the mean for the variable $X$is given:

${渭}_X=7.6$

Ms. Hall multiplies the number of correct answers $X$by $10$:

$G=10X$

Property mean:

${渭}_{aX+b}=a{渭}_X+b$

Then we can determine the mean for $G$:

localid="1649909794929" $$\begin{gathered} {渭}_G={渭}_{10X} \\ =10{渭}_X \\ =10(7.6) \\ =76 \end{gathered}$$

In the output, the standard deviation "StDev" for the variable $X$is given:

${蟽}_X=1.32$

Ms. Hall multiplies the number of correct answers $X$by $10$:

$G=10X$

Property standard deviation:

${蟽}_{aX+b}=a{蟽}_X$

Then we can determine the standard deviation for $G$:

localid="1649909831105" $$\begin{gathered} {蟽}_G={蟽}_{10X} \\ =10{蟽}_X \\ =10(1.32) \\ =13.2 \end{gathered}$$

Given

$\begin{array}{llllllll}\mathrm{N}& \text{Mean}& \text{Median}& \text{StDev}& \text{Min}& \text{Max}& Q_1& Q_3\\ 30& 7.6& 8.5& 1.32& 4& 10& 8& 9\end{array}$

Ms. Hall multiplies the number of correct answers $X$by $10$:

$G=10X$

Property standard deviation:

${蟽}_{aX+b}=a{蟽}_X$

Then we can determine the standard deviation for $G$:

localid="1649909863743" $$\begin{gathered} {蟽}_G={蟽}_{10X} \\ =10{蟽}_X \end{gathered}$$

The variance is the square of the standard deviation:

localid="1649909871172" $$\begin{gathered} {蟽}_G^2={10}^2{蟽}_X^2 \\ =100{蟽}_X^2 \end{gathered}$$

Thus the variance of $G$is $100$times the variance of $X$.