IB Math AA SL · 2019 to 2025
Unit 4: Statistics & Probability
307 past paper questions from 40 papers across 11 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 · 2019 to 2026
Unit 4: Statistics & Probability
Latest exam session: May 2026
- questions
- 307
- questions
- papers
- 40
- papers
- exam sessions
- 11
- exam sessions
- micro-topics
- 24
Topics in Unit 4: Statistics & Probability
In syllabus order. The ring is the share of the marks each one carries.
4.1
Sampling & reliability
2% of marks13 of the 756 marks across the 40 Math AA SL papers analysed (2%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 10 questions
- RisingSampling techniques
4.2
Data presentation
7% of marks54 of the 756 marks across the 40 Math AA SL papers analysed (7%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 30 questions
- DueFrequency & histograms
4.3
Central tendency & spread
11% of marks83 of the 756 marks across the 40 Math AA SL papers analysed (11%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 43 questions
- DueStandard deviation
4.4
Correlation & regression
7% of marks55 of the 756 marks across the 40 Math AA SL papers analysed (7%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 30 questions
4.5
Probability basics
4% of marks33 of the 756 marks across the 40 Math AA SL papers analysed (4%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 16 questions
- RisingBasic probability
4.6
Combined & conditional events
14% of marks104 of the 756 marks across the 40 Math AA SL papers analysed (14%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 37 questions
- DueTree diagrams
4.7
Discrete random variables
14% of marks106 of the 756 marks across the 40 Math AA SL papers analysed (14%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 37 questions
4.8
Binomial distribution
11% of marks83 of the 756 marks across the 40 Math AA SL papers analysed (11%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 28 questions
4.9
Normal distribution
5% of marks37 of the 756 marks across the 40 Math AA SL papers analysed (5%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 18 questions
4.10
Regression & prediction
3% of marks19 of the 756 marks across the 40 Math AA SL papers analysed (3%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 11 questions
4.11
Conditional probability
11% of marks86 of the 756 marks across the 40 Math AA SL papers analysed (11%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 26 questions
4.12
z-values & inverse normal
11% of marks83 of the 756 marks across the 40 Math AA SL papers analysed (11%) were on this topic. A past-paper pattern, not a guarantee for your next paper. · 21 questions
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 24 micro-topics for the next sitting. Numbers are questions per year.
fewermore
| Micro-topic | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
4.7.1Distributions & E(X) | ·Distributions & E(X), 2019: 0 questions | 8Distributions & E(X), 2021: 8 questions | 7Distributions & E(X), 2022: 7 questions | 5Distributions & E(X), 2023: 5 questions | 6Distributions & E(X), 2024: 6 questions | 6Distributions & E(X), 2025: 6 questions | 5Distributions & E(X), 2026: 5 questions |
4.11.1Conditional probability | 2Conditional probability, 2019: 2 questions | 7Conditional probability, 2021: 7 questions | 4Conditional probability, 2022: 4 questions | 4Conditional probability, 2023: 4 questions | 5Conditional probability, 2024: 5 questions | 3Conditional probability, 2025: 3 questions | 1Conditional probability, 2026: 1 question |
| 3Binomial probabilities, 2019: 3 questions | 2Binomial probabilities, 2021: 2 questions | 4Binomial probabilities, 2022: 4 questions | 4Binomial probabilities, 2023: 4 questions | 4Binomial probabilities, 2024: 4 questions | 7Binomial probabilities, 2025: 7 questions | 2Binomial probabilities, 2026: 2 questions | |
4.12.2Inverse normal | 1Inverse normal, 2019: 1 question | ·Inverse normal, 2021: 0 questions | 1Inverse normal, 2022: 1 question | 4Inverse normal, 2023: 4 questions | 2Inverse normal, 2024: 2 questions | 2Inverse normal, 2025: 2 questions | 2Inverse normal, 2026: 2 questions |
4 more micro-topics with a free account
- DueTree diagrams· last May 24 P1 TZ2
- Dueusually examined, but missing from the last two exam sessions
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Questions on Unit 4: Statistics & Probability, by exam session
Which papers asked about Unit 4: Statistics & Probability, and which question numbers. Open a paper to see them highlighted.
May 2026
8 questions across 4 papers
May 2025
11 questions across 6 papers
November 2024
10 questions across 4 papers
May 2024
10 questions across 4 papers
November 2023
8 questions across 4 papers
May 2023
10 questions across 4 papers
November 2022
3 questions across 2 papers
May 2022
10 questions across 4 papers
November 2021
4 questions across 2 papers
May 2021
9 questions across 4 papers
Specimen 2019
5 questions across 2 papers
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Frequently asked questions
Short answers about this page.
Which Math AA SL exam sessions are covered for Unit 4: Statistics & Probability?
11 exam sessions from 2019 to 2026, the latest May 2026. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 40 papers in this archive.
Which Unit 4: Statistics & Probability topic comes up most?
Distributions & E(X) (4.7.1): in 43% of papers, last seen May 26 P2 TZC. Usually "find / solve", worth about 6.2 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.
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