Find the median of the sample data below.

• A. 24
• B. 18
• C. 22
• D. 33

Answer: (C)

Verified step by step guidance

1. First, list all the ages of the students in the college class: 26, 33, 31, 22, 20, 19, 21, 18, 25.
2. Next, arrange these ages in ascending order: 18, 19, 20, 21, 22, 25, 26, 31, 33.
3. Count the number of data points. In this case, there are 9 ages.
4. Since the number of data points is odd, the median is the middle number in the ordered list. Find the middle position by using the formula (n + 1) / 2, where n is the number of data points.
5. Calculate the position: (9 + 1) / 2 = 5. The median is the 5th number in the ordered list, which is 22.