How Much Maths Is in A Level Biology? (Statistics, Graphs, Calculations)
How Much Maths Is in A Level Biology? (Statistics, Graphs, Calculations)
Created:Updated: 14-September-2025
Wondering how much maths is in A Level Biology? Here’s a breakdown of the statistical skills, graphs, and calculations you’ll need to master—and how to prepare with confidence.
Why Is Maths Important in A Level Biology?
Maths is a core part of A Level Biology because biology increasingly relies on data analysis, quantitative skills, and evidence-based conclusions.
The exam board specifications require you to demonstrate mathematical competence across topics like statistics, graphs, and calculations.
According to the AQA A Level Biology specification, at least 10% of exam marks will assess mathematical skills.
What Kind of Maths Do You Need?
- Basic arithmetic and ratios (percentages, magnification, scaling)
- Algebra (rearranging equations, interpreting formulas)
- Graph skills (plotting, interpreting gradients, drawing lines of best fit)
- Statistical tests (chi-squared, t-tests, Spearman’s rank, standard deviation)
- Units and conversions (micrometres, millimetres, etc.)
Many of these skills are first introduced at GCSE Maths and Science, but at A Level you’ll apply them more rigorously to biological contexts.
Do You Need a Strong GCSE Maths Background?
You don’t need to be a top-level mathematician, but a good GCSE Maths foundation (at least grade 5/6) makes a big difference.
Students who are confident with numbers, ratios, and graphs usually find it easier to manage the quantitative side of biology.
If you struggled with maths at GCSE, don’t panic—plenty of resources are available, and your tutor can provide extra support.
How Are Maths Skills Assessed in Exams?
Maths questions appear throughout the written papers, often integrated into data analysis or experimental design.
For example, you might be asked to calculate percentage change, interpret a graph, or carry out a statistical test.
These questions carry significant marks and reward students who can apply maths accurately to biological contexts.
Tips for Mastering Biology Maths
- Practise past paper questions that focus on maths skills in biology.
- Use revision guides and online resources that explain statistical tests step by step.
- Work on graph drawing and interpretation, since clear presentation often earns extra marks.
- Keep a glossary of formulae and key maths terms alongside your biology notes.
A good resource is the STEM Learning maths in biology guide, which outlines key skills.
Frequently Asked Questions
How much of A Level Biology is maths?
At least 10% of exam marks directly test mathematical skills, though maths is also embedded in many other questions.
Do I need A Level Maths to study A Level Biology?
No. GCSE Maths is enough, but confidence with numbers and graphs is very helpful.
What statistical tests do I need to know?
You’ll need to understand chi-squared tests, t-tests, Spearman’s rank, and standard deviation.
Will universities look at my maths ability for biology courses?
Universities mainly look at your Biology grade, but strong maths skills support success in biology-related degrees.