Mean, Variance & Standard Deviation

About this app

An interactive educational tool designed to help students intuitively grasp the concepts of mean, deviation, variance, and standard deviation. By adjusting five data points, users can visualize data on a dot plot and instantly see how changes affect calculations and equations. It also includes an engaging challenge mode where users can test their skills by solving multiple-choice questions to build a high score streak.

Use cases

• Students seeking to visualize and master basic statistical concepts like mean and standard deviation.
• Math teachers looking for an interactive visual aid for classroom demonstrations on spread and dispersion.
• Anyone reviewing middle school or introductory statistics concepts through hands-on practice.

Features

• Interactive five-point data controller with dynamic step buttons.
• Real-time SVG dot plot visualization representing data spread.
• Step-by-step formulas displaying mean and deviation calculations instantly.
• Detailed calculation table showing deviations and squared deviations to explain variance.
• Interactive quiz game that challenges players to calculate the mean or variance, complete with streak tracking.