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Open Statistics curriculum with free tutor support when students need help.

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High school statistics / AP Statistics / intro college

Statistics curriculum

A statistics course from data collection and visualization through probability, inference, regression, and responsible communication.

Pacing
8 units, 24-32 weeks self-paced
Units
8 unit sequence
Practice
640 checked answers
Support
Self-paced or tutor-guided
Outcomes
  • Design fair data collection plans and recognize bias.
  • Use probability models to reason about uncertainty.
  • Interpret confidence intervals, tests, and regressions without cargo-culting formulas.

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AP/College StatisticsOrganic Chemistry Tutor videos

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Unit sequence

Built for independent progress first, then tutor support where the student gets stuck.

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  1. 01

    Data, variables, and study design

    • Distinguish observational studies, experiments, and surveys.
    • Identify bias, confounding, and sampling problems.

    Practice: Critique a poll and redesign its sampling plan.

  2. 02

    One-variable data

    • Use histograms, boxplots, center, spread, and outliers.
    • Choose summaries that match distribution shape.

    Practice: Write a complete data description from a real dataset.

  3. 03

    Two-variable data

    • Analyze scatterplots, correlation, and linear regression.
    • Interpret residuals and model limitations.

    Practice: Fit and critique a regression model using residual evidence.

  4. 04

    Probability foundations

    • Use counting, conditional probability, and independence.
    • Model random processes with rules and simulations.

    Practice: Simulate a probability question and compare it to exact reasoning.

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