ACT Science: Data Representation

What is Data Representation?

Data Representation questions make up about 38% of the ACT Science section. They present graphs, tables, and charts and ask you to read, interpret, and draw conclusions from the data.

Step-by-Step Approach

• Read the axis labels and units carefully before answering

• Identify trends: as X increases, does Y increase, decrease, or stay the same?

• Use the data – don't use outside knowledge (the ACT tests data reading, not memorised facts)

Common Graph Types

• Line graphs – show trends over time or changing conditions

• Bar graphs – compare discrete categories

• Scatter plots – show correlation between two variables

• Tables – compare multiple variables simultaneously

Speed Tip

In the ACT Science section, spend 5 minutes on reading/data passages and 8 minutes on conflicting viewpoints passages. Do NOT read the passages first if you're short on time – go straight to the questions.