Answer
$Mean=792.51~m/s$
$Median=792.4~m/s$
Work Step by Step
In ascending order: 789.6, 791.4, 791.7, 792.3, 792.4, 792.4, 793.1, 793.8, 794.0, 794.4
$Mean=\frac{789.6+791.4+791.7+792.3+792.4+792.4+793.1+793.8+794.0+794.4}{10}=792.51$
There are 10 observations. So, the median is the mean between the fifth and the sixth observations in ascending order.
$Median=\frac{792.4+792.4}{2}=792.4$
