To find the median of the data set {4, 5, 6, 5, 4}, we first need to arrange the numbers in ascending order:
4, 4, 5, 5, 6
The median is the middle value in a data set when it is ordered. Since there are 5 values (an odd number), the median is the third value in this ordered list.
- Arrange the data: 4, 4, 5, 5, 6
- Identify the middle value: The third value is 5.
Thus, the median of the data is 5.