NOT Instagrams
 Histograms
are all about
groups of numerical data.
 Histograms show intervals of
data (it kind of looks like a
bar graph).

For example, a histogram may show how many
people at a Justin Bieber concert were in their
teens, twenties, thirties, forties, and fifties.
Number of People At the Justin Bieber Concert
Fiftees
Forties
Numer of People At
Thirties
the Justin Bieber
Concert
Twenties
Teens
0
10,000
20,000
30,000

Example  The boys in Mr. Robinson’s Math

Here are the steps to creating a histogram:

class earned the following scores on their last
exam: 71, 82, 89, 63, 81, 92, 64, 85, 72, 87.
1. First, we need to figure out what size intervals
(or groups) would be appropriate for this data.
◦ We should put our data into groups of:
_________________________________________

Make a frequency table that shows how many
test scores were in each group.
Test Score Intervals
Amount of Tests
60 – 69
2
70 – 79
2
80 – 89
5
90 – 99
1
71, 82, 89, 63, 81, 92, 64, 85, 72, 87


Next, we will make a graph from our table. Begin
by drawing two intersecting lines which create
the X and Y axis.
Remember, we will have to label both of these
axes with units in a second.
4. Use the left side of your paper to set the range to
match your table. Ours is from 1-5. Include units.
5. Then label the bottom of your graph with the test
score intervals. Give your graph a title!
6. When you graph your data, the bars must touch!

What is the number of persons below the age of 60
in the histogram below?

If 70 and above is considered a passing grade, how
many students passed the math test?
Now, see if you can create
a histogram of your data!
Don’t forget, your
histogram must also come
with the frequency table!