ACT Science

A comprehensive guide to mastering the ACT Science section, focusing on data analysis, scientific reasoning, and real-world applications.

Basic Concepts

Reading Graphs, Tables, and Charts

Why Data Interpretation Matters

In the ACT Science section, you'll see lots of visual data—charts, tables, and graphs. Interpreting these visuals quickly and accurately is a key skill.

Types of Data You’ll See

  • Bar Graphs: Compare different groups or show changes over time.
  • Line Graphs: Show trends and relationships between variables.
  • Tables: Present detailed numerical data for comparison.
  • Scatterplots: Show correlations or patterns.

Strategies for Success

  • Read Titles and Labels: Always start by reading what the chart or table is about.
  • Identify Variables: Look at axes, units, and legends.
  • Look for Trends and Patterns: See if values go up, down, or stay the same.
  • Check for Outliers: Spot unusual data points.

Common Pitfalls

Don’t just glance at the chart—make sure you understand what each axis and column represents. Double-check units and scales.

Real-World Connections

From sports statistics to weather forecasts, data interpretation is everywhere!

Examples

  • Identifying the highest point on a temperature graph to find the hottest day.

  • Using a table to compare the reaction times of chemicals.

In a Nutshell

Reading and understanding data visuals is essential for ACT Science and everyday life.

Key Terms

Variable
A factor that can change and is measured in an experiment.
Axis
The reference lines on a graph (x-axis and y-axis) that show variables.