Correct. The mean is the sum of all the numbers divided by the number of numbers in the data set: $\displaystyle\frac{{318}}{{25}}={12.72}\usepackage{cmbright}\Huge\$ . The values in order from least to greatest are:

7, 9, 10, 10, 10, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 14, 14, 15, 16, 17, 17, 17, 17

The median is the number in the middle of the list: 12. The number 12 appears seven times on the list, more than any other number, so it is the mode. The range is $\displaystyle{17}-{7}={10}\usepackage{cmbright}\Huge\$ . The midrange is $\displaystyle\frac{{{17}+{7}}}{{2}}=\frac{{24}}{{2}}={12}\usepackage{cmbright}\Huge\$ .