270 Part 4: The State of the World
Enrollment in Arts Courses
Painting
10%Art History
20%
Ceramics
10%Chorus
22%Band
16%Music
Theory
4%Sculpture
18%This graph shows the enrollment in
various arts electives last year.- What percentage of the enroll-
ment was in music courses? - Which arts course had the larg-
est enrollment? - Which two courses had the most
similar enrollments? - If a total of 461 students signed
up for arts electives, how many
students took Art History?
Line Graph
A line graph is a graph that connects points with line segments. The lines help to clarify the
pattern of change in the values the points represent.When to Use It
Line graphs are generally used to show the change in a quantity over time. A runner might
record her times at each daily practice and create a line graph to help her see the pattern of
improvement, or to see if there was a particular time when her times were slower or faster than
usual.How to Draw It
To create a line graph, you need data that has been recorded. Each entry should include a date
or time and a value. Let’s suppose that runner recorded her times in seconds for the 200 meters
every day in April. Here is her record for the first 10 days.