Back-to-back stemplot

A back-to-back stemplot is two stemplots sharing a spine, so the two shapes sit against each other and you can see at once which group runs higher. For example, on a stem of 6 that holds the tens digit, class A leaves of 5 and 8, read leftward away from the stem, are 65 and 68, while class B leaves of 1 and 3 read rightward as 61 and 63. No values are lost in the display, so each group's median can still be counted straight off the plot. The AP Statistics course framework lists back-to-back stem-and-leaf plots among the displays used to compare distributions of one quantitative variable.