To find the median, we first need to arrange the data in ascending order. The given set of values is:
\[ 22.8, 22.1, 50.5, 22.4, 22.2 \]
Arranging these values in ascending order, we get:
\[ 22.1, 22.2, 22.4, 22.8, 50.5 \]
Count the number of observations in the data set. In this case, there are 5 observations.
Since the number of observations is odd (5), the median is the middle value in the ordered list. The middle value is the third value in the list:
\[ 22.1, 22.2, \mathbf{22.4}, 22.8, 50.5 \]
Thus, the median is 22.4.