ACT Math

A comprehensive course covering the essential math concepts and strategies needed to excel on the ACT.

Numbers and OperationsAlgebraic Expressions and EquationsGeometry Basics
Functions and GraphsProbability and StatisticsQuadratic Equations and Polynomials
Math in Personal FinanceGeometry in Real LifeStatistics in Everyday Decisions
Time Management on the ACTPlug-In and Backsolving
Numbers and Operatio...Algebraic Expression...Geometry BasicsFunctions and GraphsProbability and Stat...Quadratic Equations ...Math in Personal Fin...Geometry in Real Lif...Statistics in Everyd...Time Management on t...Plug-In and Backsolv...
Advanced Topics

Probability and Statistics

Making Sense of Data

Probability and statistics questions test your ability to interpret information and predict outcomes.

Probability

  • Probability is the chance that an event will happen.
  • Calculated as \( P = \frac{\text{number of favorable outcomes}}{\text{total possible outcomes}} \)

Statistics

  • Mean: The average value.
  • Median: The middle value.
  • Mode: The most common value.
  • Range: Difference between largest and smallest numbers.

Reading Graphs

  • Bar graphs, line plots, and scatterplots show data visually.

Real-World Application

Use these skills to understand sports stats, survey results, or even weather forecasts!

Examples

  • The probability of rolling a 3 on a fair die is \( \frac{1}{6} \)

  • The mean of 2, 4, 6 is \( \frac{2+4+6}{3} = 4 \)

In a Nutshell

Probability and statistics help you understand and predict real-life events using numbers.

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Quadratic Equations and Polynomials