Let's say you're playing a game of "I Spy" while traveling.
You want to count the number of black, white, and red cars that you see.
You use tally marks, so you don't lose track.
After some time, you count the tally marks and plot the frequency of the cars in a chart.
Frequency means how often something occurs.
A frequency chart is a table that shows the number of times something happens.
The frequency for each car is shown in the third column.
The frequency chart for the data looks like this:
A frequency chart helps us see data in a more organized manner.
Black cars were seen more frequently than red or white cars.
Great observation.
A pizza shop owner tracks the flavors ordered by his customers today.
He makes a tally for each order.
He counts the tally marks.
Then, he creates a frequency chart out of the data.
Based on the chart above, what was the most ordered flavor?
Yes, pepperoni.
What was the least ordered flavor?
Extra cheese was only ordered 9 times. It's the lowest number in the chart.
How many people ordered sausage?
Correct, 11.
How many ordered mushrooms?
Yes, 13.
Great job learning about frequency charts.
Think you got it? Try the practice.