IB Math AI SL · 2021 to 2026
Unit 4: Statistics and Probability
501 past paper questions from 46 papers across 12 exam sessions. See what repeats, then practise the same skills with AI marking.
Starter set across the most-tested skills, with AI marking and model answers.
SL archive · 2021 to 2026
Unit 4: Statistics and Probability
Latest exam session: May 2026
- questions
- questions
- papers
- papers
- exam sessions
- exam sessions
Topics in Unit 4: Statistics and Probability
In syllabus order. The ring is the share of the marks each one carries.
4.1
Introduction to statistics
5% of marks · 28 questions
4.2
Presentation of data
6% of marks · 33 questions
4.3
Mean, median, and mode
9% of marks · 47 questions
- RisingRange and Standard Deviation
- FadingEffect of Transformations
4.4
Correlation of data
7% of marks · 36 questions
4.5
Trial and outcome
2% of marks · 11 questions
- RisingTables and experimental probability
4.6
Venn diagrams, trees and combined events
14% of marks · 64 questions
4.7
Discrete random variables
7% of marks · 31 questions
4.8
Binomial distribution
12% of marks · 47 questions
4.9
Normal distribution
11% of marks · 52 questions
4.10
Spearman rank correlation coefficient
6% of marks · 31 questions
4.11
Expected, observed, hypotheses, chi-squared, goodness of fit, and t-test
21% of marks · 121 questions
- RisingContingency Tables and Chi-Squared
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Top 4 of 35 micro-topics for the next sitting. Numbers are questions per year.
fewermore
| Micro-topic | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|
| 4Binomial Calculations, 2021: 4 questions | 4Binomial Calculations, 2022: 4 questions | 9Binomial Calculations, 2023: 9 questions | 4Binomial Calculations, 2024: 4 questions | 9Binomial Calculations, 2025: 9 questions | 5Binomial Calculations, 2026: 5 questions | |
4.9.2Normal Probabilities | 7Normal Probabilities, 2021: 7 questions | 6Normal Probabilities, 2022: 6 questions | 7Normal Probabilities, 2023: 7 questions | 11Normal Probabilities, 2024: 11 questions | 10Normal Probabilities, 2025: 10 questions | 4Normal Probabilities, 2026: 4 questions |
| 4Conditional probability, 2021: 4 questions | 3Conditional probability, 2022: 3 questions | 4Conditional probability, 2023: 4 questions | 1Conditional probability, 2024: 1 question | 3Conditional probability, 2025: 3 questions | 3Conditional probability, 2026: 3 questions | |
| 6Contingency Tables and Chi-Squared, 2021: 6 questions | 3Contingency Tables and Chi-Squared, 2022: 3 questions | 2Contingency Tables and Chi-Squared, 2023: 2 questions | 2Contingency Tables and Chi-Squared, 2024: 2 questions | 16Contingency Tables and Chi-Squared, 2025: 16 questions | 8Contingency Tables and Chi-Squared, 2026: 8 questions |
4 more micro-topics with a free account
- RisingRange and Standard Deviation· last May 26 P2 TZ3
- Risingappearing more often in the last two years than before
Free account · no card needed
See the full exam pattern
Every micro-topic in the heatmap and the complete watch list, free with an account.
You come straight back to this page with your set built.
- With a free account
- 3 generated sets of 10 past-paper questions, any scope
- One AI-marked practice set with step-by-step feedback
- The full exam pattern: every micro-topic and the watch list
Past paper generator
Generate Math AI SL past paper questions
Choose what to revise and build a set in one click. Every question stays whole, so multi-part questions come as they appeared in the exam.
- 1Pick any unit, topic or micro-topic
- 2Generate whole exam questions from the archive
- 3Practise the same skills with AI marking
Questions on Unit 4: Statistics and Probability, by exam session
Which papers asked about Unit 4: Statistics and Probability, and which question numbers. Open a paper to see them highlighted.
May 2026
15 questions across 6 papers
November 2025
12 questions across 4 papers
May 2025
12 questions across 6 papers
November 2024
12 questions across 4 papers
May 2024
13 questions across 4 papers
November 2023
12 questions across 4 papers
May 2023
12 questions across 4 papers
November 2022
7 questions across 2 papers
May 2022
11 questions across 4 papers
November 2021
6 questions across 2 papers
May 2021
10 questions across 4 papers
Specimen 2021
8 questions across 2 papers
Every Unit 4: Statistics and Probability question, unlocked
Generate all 501 questions in this unit at once, practise every one with AI marking, and see how each mark is awarded.
- Every past-paper question in any unit, topic or micro-topic
- Generate sets of 20 or all questions, as often as you like
- Unlimited practice with AI marking and worked answers
- See how every mark is awarded for each question
- Predicted papers and crash courses built from the same data
Used by IB students preparing for Nov 2026, May 2027 and May 2028
From €8.29/mo. 14-day money-back guarantee. Cancel anytime.
Frequently asked questions
Short answers about this page.
Which Math AI SL exam sessions are covered for Unit 4: Statistics and Probability?
12 exam sessions from 2021 to 2026, the latest May 2026. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 46 papers in this archive.
Which Unit 4: Statistics and Probability topic comes up most?
Binomial Calculations (4.8.2): in 48% of papers, last seen May 26 P2 TZ1. Usually "Find", worth about 5.1 marks in a paper that includes it.
Can I see the original question and mark scheme?
No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.
What do "banker", "due" and "rising" mean?
Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.
What is free and what needs Pro?
Reading this page and the exam pattern is free. A free account generates three sets of ten questions and launches one practice set. Pro opens every question in any scope, sets of twenty or all, and unlimited practice.
Keep going
More Math AI SL exam preparation
Every question, by paper
What each Math AI SL paper tests across all its sittings: the marks by unit and the micro-topics it keeps coming back to.
Open the paper analysis
Predicted questions
The question types most likely in the next Math AI SL sitting, built from this same archive.
See the predictions
Formula booklet, explained
Every formula you are given in the exam, with when to use it and the traps around it.
Open the booklet guide
Mock exams
Full Math AI SL papers under timed conditions, marked by AI against IB criteria.
Sit a mock
All IB past papers
Every subject we have classified by topic, with the same exam-pattern analysis.
Browse subjects
Practise Unit 4: Statistics and Probability the way it is examined.
Pick any unit, topic or micro-topic, see what repeats, then practise the same skills with AI marking.