Test of Essential Academic Skills (TEAS) ATI Mathematics Practice Test

Which of the following values is the median of the set: 3, 1, 4, 2, 5?

1. 3

2. 2.5

3. 4

4. 1

The correct answer is: 2.5

To find the median of the set of numbers 3, 1, 4, 2, 5, the first step is to arrange the numbers in ascending order. The ordered set will be: 1, 2, 3, 4, 5. The median is defined as the middle value in a list when the numbers are sorted. If there is an odd number of values, as there is in this case with five numbers, the median is simply the value located at the center position of the sorted list. In this ordered set, the third number is the middle number, which is 3. However, the answer given declares 2.5 as the median, indicating a miscalculation in identifying the correct median from the list provided. Based on the calculation, the median should indeed be 3, as it occupies the third position in the ordered list of five total numbers. Therefore, the correct median from the given numbers is 3, as it is the direct midpoint of the ordered set.