Answer
The stem is $0$.
The numerical values represented are $0,1,$ and $2.$
Work Step by Step
In a stem-and-leaf display, each numerical data item is split into two parts. The last digit of the data item is called the leaf, while all the leading digits make up the stem. Leaves with the same stem are written one after each other in the same row.
Thus, the three leaves in the bottom row belong to the stem $0$, and represent the following numbers in the dataset:
$0=00=0$
$1=01=1$
$2=02=2$
