Find the median of this data set.
13, 5, 9, 23, 11, 47, 29, 31, 7
Arranging the data set in ascending order:
5, 7, 9, 11, 13, 23, 29, 31, 47
Here, n = 9 (odd)
Median=(n+1)2th observation
=(9+1)2
=5th observation
=13
Therefore, the median is 13.