Answer
Mean: $y ̅ =6.4$
Median: $y ̃=7.0$
Work Step by Step
$y ̅ =\frac{∑y_i}{n}=\frac{6.3+5.9+7.0+6.9+5.9}{5}=\frac{100}{5}=6.4$
Position of the median:
$0.5(n+1)=0.5(5+1)=3$
That is, for a sample of size 5, the median is the value of the third observation. In the given sample it is 7.0.
