Line Plots, Histograms, and Stem-and-Leaf Plots

line plot

histogram

stem-and-leaf plot

number to draw

20

new set of drawings

you drew this set of numbers: 8.8, 5.2, 0.9, 3.8, 0.1, 9.3, 5.4, 4.8, 2.5, 7.6, 9.8,

2.2, 4.6, 8.8, 5.8, 2.6, 9.2, 4.2, 9.9, 5.9

2

4

6

8

10

1

2

3

4

mean = 5.57 median = 5.3 mode = 8.8

Here are various ways to display data graphically.

A line plot shows data along a number line with "x"s or other symbols to mark the frequency of data.

A histogram shows tabulated frequencies of numbers in sets of categories. In this case the categories are the ranges from 0-1, 1-2, ….

Finally, the stem-and-leaf plot shows a stem (the initial digit) as well as all the second digits (the "leaves") for that stem. For example, if 9 | 024 is a line in the stem and leaf plot, the data contains 9.0, 9.2, and 9.4.