The median is the middle value when all numbers are arranged from smallest to largest.
The given observations are: 12, 59, 14, 46, 18, 42, 26, 33, 22
Total numbers =9
Arranging in ascending order:
12, 14, 18, 22, 26, 33, 42, 46, 59
Since there are 9 numbers (odd count), there is one middle value.
Middle position =2n+1
Middle position =29+1
Middle position =210
Middle position =5
The 5th value in the sorted list is 26.
Therefore, the median is 26.