The box-and-whisker plot shows the greatest value of the data set to be 99 and the least value to be 72. Add these values together and divide by 2 to find the midrange: $\displaystyle\frac{{{99}+{72}}}{{2}}=\frac{{171}}{{2}}={85.5}\usepackage{cmbright}\Huge\$ . This statement is true.