Final answer:
The median range of the given ages (14, 12, 15, 17) is 14.5.
Step-by-step explanation:
The median is the middle value in a set of numbers when they are arranged in order.
To find the median range of the ages of the children (14, 12, 15, 17), we need to first arrange them in order from smallest to largest: 12, 14, 15, 17.
Since there is an even number of values, we take the average of the two middle values to find the median. In this case, the median is (14 + 15) / 2 = 14.5.