1. **State the problem:** We are given a data set represented by a box plot with values 21, 23, 25, 33, and 49. We need to find the lowest value, highest value, and the median of the data. 2. **Identify the lowest and highest values:** The lowest value is the smallest number in the data set, which is 21. The highest value is the largest number, which is 49. 3. **Find the median:** The median is the middle value when the data is ordered from smallest to largest. The data points are 21, 23, 25, 33, 49. 4. Since there are 5 data points (an odd number), the median is the third value in the ordered list. 5. The third value is 25, so the median is 25. 6. **Final answer:** Lowest = 21; Highest = 49; Median = 25.