How to turn a Frequency table into a Histogram
By: Adam Batman and Micah Pistillo
What we will be showing you to do
Turning this... … into this
Steps
First you have to decide on a topic (we chose how many pizza slices you can eat in one sitting)
Then ask a group of people your questionWhile they answer put the data into a table
by putting all the answers on one side then the number of people on the other
Step 1 make a frequency table
After step 1
You should have this at step 1
An interval is an increment of numbers your data will go up by
It all depends on your data if you had 100 answers then your intervals could be by 10
For ours we had up to 36 was our highest number so are intervals were by 6
Step 2 decide on an interval
This is pretty self explanatory but just in case…
You just want to make a normal chart and put each interval on one side (for example: 1-6, 7-12, 13-18.. so on)
Then count how many people answer in each interval and put that many tallies or just the number
Step 3 Make a new chart with intervals on one side and tallies on the other
Your title should say something about your question and sometimes your group of people you asked
Ours was Number of pizza slices Mrs. Clark’s AA class can eat in one sitting
Step 4 Pick a title for your graph
Again self explanatoryYou want to make sure that your intervals
are on the right axis because if you put them on the vertical axis
You would not be able to graph the intervals
Step 5 Put your intervals on the horizontal axis
You should label your intervals on what your question was asking
For ours we had Number of Slices
Step 6 label your intervals
First you have to pick a number that can evenly go into it
You do not want such a small number that your graph will be huge
But you don’t want the numbers to be to big , then your graph will be to small
It should go up to the biggest number people in a interval
For our graph we went up by 5 because we had a total number of 28 people answering a 23 being the biggest bar
Step 7 Pick a number to go up by on the vertical axis
This should be the people you surveyed or just frequency works
On our graph we had number of people
Step 8 Label your vertical axis
Pretty explanatoryJust take your time when marking it between
the intervals try and make it as close as possible
Step 9 Count up the tallies per interval and make a bar
To be classified as a histogram the bars must touch
Step 10 Do for all others. Be sure bars touch one another
This is the final product
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