Histograms
display data so that it can be
easily understood. You can use graphs to compare sets of data.
Remember-
In a histogram the bars need to
touch each other.
How to make a
histogram:
1. Use the data from the
table to choose the right scale.
All scales start at 0.
2. Draw and label the scale on the
vertical axis.
(Vertical means "up and down.")
3. Draw
and label the
horizontal axis. (Horizontal means "across.")
4. List the name of each
item.
5. Draw
vertical bars to
represent each number.
The vertical bars
need to touch!
6.
Title the graph.
Histogram
Color of Eyes in Miss. Wood's Class
Blue
8
Green
3
Brown
9
Hazel
4
Example-
How many students in Miss. Wood's Class have blue eyes? First look at the
horizontal axis and find where the word blue is. Go up the bar
until you hit the top. Then go across to the
left and see what number is there.
By looking at the graph you can see that
8 students in Miss.
Wood's Class have blue eyes.
This is
NOT
a histogram because the bars do
NOT TOUCH!
Histograms
display data so that it can be
easily understood. You can use graphs to compare sets of data.
