Stem-and-leaf plot - height in elderly women

http://what-when-how.com/statistics/skewness-to-systematic-review-statistics/ 

 

This stem-and-leaf plot shows us that of the 351 elderly women in the sample, most of them are either 158 or 159 or 163 inches tall.  At first, I had trouble understanding the system, but once I did, it was very easy to interpret the results:  the “stem” portion on the left stands for the first 2 digits of the height, while the “leaves” represent the heights of each woman in the sample.  If you turn this stem-and-leaf plot around to be vertical instead of horizontal, you get a histogram.