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  3. AP Statistics - Unit 4: Probability Fundamentals

ap statistics - unit 4: probability fundamentals

originally streamed in 2019 with Jerry KosoffTeacher
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Learn probability fundamentals for AP Statistics, covering two-way tables, joint probability, conditional probability, and independence. This video breaks down Unit 4 concepts with clear examples and formulas to help you understand how to calculate a ...more

covered in this stream

units
Unit 4 – Probability, Random Variables, and Probability Distributions
topics
4.3 Introduction to Probability4.4 Mutually Exclusive Events4.5 Conditional Probability4.6 Independent Events and Unions of Events

timestamps

  • 0:00

    Welcome and Introduction

  • 0:36

    Probability Foundations

  • 1:07

    Session Agenda

  • 2:40

    Defining Probability

  • 3:12

    Law of Large Numbers

  • 3:45

    Roulette Wheel Examples

  • 5:49

    Event Complements

  • 6:50

    Complements in Practice

  • 7:53

    Joint Probability

  • 8:55

    Mutually Exclusive Events

  • 9:58

    Union of Events

  • 10:59

    Avoiding Double Counting

  • 13:35

    Conditional Probability

  • 15:08

    Conditional Phrases and Formulas

  • 16:11

    Tree Diagrams Introduction

  • 17:12

    Tree Diagram Calculations

  • 18:15

    Independent Events

  • 20:19

    Checking Independence

  • 21:21

    Practice Table Problems

  • 24:55

    Union Probability Example

  • 27:32

    Conditional Probability Example

  • 29:53

    Probability Summary

  • 30:56

    Random Variables Preview

  • 35:15

    Closing and Feedback

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Study Content & Tools

Study GuidesFRQs + AI ScoringAP Essay Grader for StudentsAI Grading for TeachersPractice QuestionsGlossaryScore Calculators

Company

What's New?PricingBulk DiscountsTestimonialsFAQsEmail us

Resources

AP Exam Schedule 2027AP ClassesAP ClassroomEasiest AP ClassesHardest AP ClassesAP vs IBAP vs Dual EnrollmentAP vs Honors ClassesAP Scholar Awards

history

🌎 ap world history🇺🇸 ap us history🇪🇺 ap european history

social science

✊🏿 ap african american studies🗳️ ap comparative government🚜 ap human geography💶 ap macroeconomics🤑 ap microeconomics🧠 ap psychology👩🏾‍⚖️ ap us government

english & capstone

✍🏽 ap english language📚 ap english literature🔍 ap research💬 ap seminar

arts

🎨 ap art & design🖼️ ap art history🎵 ap music theory

science

🧬 ap biology🧪 ap chemistry♻️ ap environmental science🎡 ap physics 1🧲 ap physics 2💡 ap physics c: e&m⚙️ ap physics c: mechanics

math & computer science

🧮 ap calculus ab♾️ ap calculus bc📐 ap precalculus📊 ap statistics💻 ap computer science a⌨️ ap computer science p

world languages

🇨🇳 ap chinese🇫🇷 ap french🇩🇪 ap german🇮🇹 ap italian🇯🇵 ap japanese🏛️ ap latin🇪🇸 ap spanish language💃🏽 ap spanish literature

go beyond AP

high school exams

✏️ PSAT🎓 Digital SAT🎒 ACT

honors classes

🍬 honors algebra II🫀 honors anatomy🐇 honors biology👩🏽‍🔬 honors chemistry💲 honors economics📐 honors geometry⚾️ honors physics📏 honors pre-calculus📊 honors statistics🗳️ honors us government🇺🇸 honors us history🌎 honors world history

college classes

👩🏽‍🎤 arts👔 business🎤 communications🏗️ engineering📓 humanities➗ math🧑🏽‍🔬 science💶 social science

hs classes

🏛️ alabama history⛰️ appalachian studies🌴 california history🌍 earth science🌐 ethnic studies🐊 florida history🍑 georgia history🌎 global studies🌺 hawaiian studies📰 journalism🪶 native american studies🌵 new mexico history🤠 oklahoma history⚗️ physical science🎙️ speech and debate🤝 texas government🤠 texas history🌲 washington state history🕊️ world religions
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© 2026 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.