Cumulative distributions and percentiles

This sub-topic covers cumulative distribution functions (CDFs) for discrete and continuous random variables, and how to use CDFs to calculate percentiles, quartiles, median and interquartile range, all core skills for IB AA SL statistics exams.

📖Study Guide

In-depth bilingual notes with worked past paper examples.

✍️Practice Exam

Timed practice questions with mark scheme grading. Coming soon.

🎴Flashcards

Spaced repetition for key concepts and definitions. Coming soon.

📊Visualizer Coming Soon

Interactive plots and diagrams to build intuition. Coming soon.

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