# Video: Comparing Data by Reading a Tally Chart

The tally chart shows the results of a survey to find the favorite subject in a class. What subject is the least popular?

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### Video Transcript

The tally chart shows the results of a survey to find the favorite subject in a class. What subject is least popular?

Each tally mark in the table represents one person. Four tally marks with a line through them represents five people. This means that the tallies in the mathematics column represent five, five, and four students. Five plus five plus four is equal to 14. Therefore, 14 students said that mathematics was their favorite subject.

The science tally marks represent five, five, and three. Adding these numbers gives us 13. Therefore, 13 students said that science was their favorite subject. 16 students said that history was their favorite subject as five plus five plus five plus one equals 16. There were 10 students that said that art was their favorite subject. And finally, 17 students said that music was their favorite subject.

We were asked to work out which subject was the least popular. This will be the one with the lowest frequency. The lowest frequency is 10. We can therefore conclude that art is the least popular subject.

We could go one step further and order the subjects in terms of their popularity. From least popular to most popular, the order would be art, science, mathematics, history, and then music. This is because the numbers in ascending order are 10, 13, 14, 16, and 17.