What is the median of the data in this stem-and-leaf plot? 21 22 23 24 Untitled Stem and leaf plot. Vertical line separates each stem number from its first leaf number. First row. Stem 1. Leaves 4, 5, 7. Second row. Stem 2. Leaves 1, 2, 4, 4, 6. Third row. Stem 3. Leaves 0, 2. Key. 2 vertical line 1 means 21.