Cambridge is retiring O Level Statistics (4040). In its place comes a new syllabus, Cambridge IGCSE Statistics (0479), with its first exam in June 2027. Students who start now will be the first to sit it.
It is also one of the most rewarding extra subjects a student can take. It adds a strong grade to your profile for a manageable amount of work, and it covers a large part of what A Level Mathematics later asks of you in its statistics papers. Here is what is changing, and why it is worth your time.
What is changing
IGCSE Statistics is less a new subject than a new home for an old one. Its twelve topics are almost the same as those of 4040: collecting and representing data, averages and spread, probability, rates, index numbers, correlation and time series. What changes is the qualification's name, the certificate, and when you sit it. For every topic in detail, see the IGCSE Statistics (0479) syllabus, explained.
The exam is two papers of 2 hours 15 minutes, each worth half the grade, and a calculator is used on both. IGCSE grades run from A* to G.
An extra grade within reach
Most subjects ask a lot for their grade. Statistics asks less than you might expect, and gives back more.
Cambridge publishes how candidates perform in every subject. In the November 2025 O Level series, the last full results for Statistics before the switch, the figures looked like this:
| Subject | A* | A or above | C or above |
|---|---|---|---|
| Statistics (4040) | 6.1% | 19.2% | 66.5% |
| Mathematics (4024) | 3.9% | 12.7% | 54.5% |
| Additional Mathematics (4037) | 3.1% | 8.3% | 51.5% |
Nearly one Statistics candidate in five achieved an A or A*, against roughly one in eight in Mathematics and one in twelve in Additional Mathematics.
Candidates achieving A or A*, O Level, November 2025
Statistics (4040)
19.2%Mathematics (4024)
12.7%Additional Mathematics (4037)
8.3%
These are 4040's results, because 0479 is sat for the first time in 2027. With almost identical content, they are the best guide available, and we will update this post when the first 0479 results are published.
Why is it within reach?
- It rewards method. Cambridge gives 80 to 90% of the marks for knowing and applying statistical techniques, and only 10 to 20% for interpretation. A student who practises the methods earns the marks.
- A calculator does the arithmetic. It is required on both papers, and the algebra stays light throughout.
- You have met some of it already. Averages, charts, cumulative frequency and probability all appear in O Level Mathematics, so the first weeks feel familiar.
Within reach is not the same as free. The papers are long, and marks go to working that is shown clearly. But the effort it asks is steady rather than steep, and that is what makes the grade dependable.
You can take it privately, alongside your O Levels
You do not need your school to offer it. Cambridge accepts private candidates for 0479, and in Pakistan private entries are made through the British Council.
Cambridge also lets you take an IGCSE in the same exam series as your O Levels. The only combination it rules out is two syllabuses with the same title at the same level, which here simply means you cannot sit 0479 and 4040 together.
The syllabus is designed around roughly 130 hours of teaching. Starting in November 2026, that fits into a few classes a week alongside your other subjects, and finishes in time for the June 2027 exam, in the same season as your O Level papers. The result is one more complete subject on your profile, earned in the same year. Our IGCSE Statistics course is built around exactly that timeline.
The best head start on A Level Statistics
If you are going on to A Level Mathematics, this is the strongest reason of all.
Cambridge A Level Mathematics (9709) is made of four papers, and there are only two ways to combine them:
- Pure 1, Pure 3, Mechanics and Probability & Statistics 1
- Pure 1, Pure 3, Probability & Statistics 1 and Probability & Statistics 2
Statistics 1 is in both. Whichever route you take, S1 is part of your A Level. Here is how much of it IGCSE Statistics covers before you arrive:
| S1 section | What 0479 gives you |
|---|---|
| Representation of data | Almost all of it: stem-and-leaf diagrams, box plots, histograms, cumulative frequency, mean and standard deviation |
| Probability | Most of it: exclusive and independent events, tree diagrams, conditional probability |
| Discrete random variables | The first step: probability tables and expectation. The binomial and geometric distributions are new |
| The normal distribution | The key idea: 0479 standardises data to a mean of 0 and a standard deviation of 1, which is exactly what a z-score does |
| Permutations and combinations | Nothing yet. This one is new at A Level |
That is two of S1's five sections largely done, and a real start on two more. At A Level, S1 then becomes the paper where you sharpen what you already know instead of meeting it for the first time, and the time saved goes to Pure Mathematics.
If your school takes Statistics 2, there is a smaller head start there too: 0479's work on populations, samples, randomness and bias is where S2's sampling and estimation begins. See how we teach the next step in our AS Level Mathematics course.
Useful well beyond Mathematics
The syllabus is built around real data, so it reaches past the Mathematics classroom:
- Economics and Business. Index numbers are how price changes such as inflation are measured, and 0479 teaches you to build and interpret one.
- Biology and Psychology. Sampling, correlation and reading data sit underneath every experiment you write up.
- Population and health data. Crude and standardised rates, such as birth and death rates, are how two populations are compared fairly.
- Everyday life. One of the syllabus's stated aims is to help you judge the accuracy and credibility of the statistics you meet. After this course, a misleading graph is much easier to spot.
Is it right for you?
IGCSE Statistics suits you if:
- you are comfortable with O Level or IGCSE Mathematics and want one more strong grade
- you plan to take A Level Mathematics, or another subject that works with data
- you like seeing numbers applied to real situations
Getting started
Our IGCSE Statistics course starts with the November 2026 intake and prepares you for the June 2027 exam.
Because 0479 is new, it has no past papers yet. Practice comes from two places: Cambridge's specimen papers for 0479, and O Level 4040 past papers, which cover almost the same content. You can see what the exam looks like right now in Cambridge's free specimen paper 2.