# Stem-and-leaf Plots

In a stem-and-leaf plot, the data are organized from least to greatest. The digits of the least place value usually form the leaves, and the next place-value digits form the stems.

The number of minutes the students in Mr. Smith's class spent doing their homework one night is shown. Display the data in a stem-and-leaf plot.

Homework Time (min)
22 5 35 30 16
27 1 24 25 21
36 23 39 30 29
18 25 25 15 35

 Step 1 Choose the stems using digits in the tens place, 0, 1, 2, and 3. The least value, 1, has 0 in the tens place. The greatest value, 39, has 3 in the tens value. Step 2 List the stems from least to greatest in the Stem column. Write the leaves, the ones digits to the right of the corresponding stems. Step 3 Order the leaves and write a key that explains how to read the stems and leaves. Include a tittle.

The stem-and-leaf plot shows the number of chess matches won by a member of the Main Street Middle School Chess Team. Find the median of the data.

 Chess Matches Won

Stem | Leaf
2 1 1 3 8
3 0 1 3 5 7 7 8
6 2 3 3 8 9
7 1 1 9

3|3 = 33 wins

Median =