Calculating Correlation & Regression
Practice computing Pearson's correlation coefficient r and regression line equation y = ax + b from raw data — both by GDC and using summary statistics.
Start practising → Formula sheet (PDF) ↗Sample questions
- Easy Calculate r using GDC from a table of data Calculator [4]
- Medium Find regression line y = ax + b and make a prediction Calculator [6]
- Hard Calculate r from summary statistics by hand No Calculator [6]
About this topic
These are original, exam-style questions written to match the IB Mathematics syllabus for Analysis & Approaches SL. Every question comes with a full step-by-step worked solution showing the method, with mark allocations matching real IB marking schemes. Questions are labelled Paper 1 (no calculator) or Paper 2 (calculator allowed) so you practise under realistic exam conditions.
How to practise
- Open the question bank using the button above.
- Attempt the question, writing out your working.
- Reveal the full worked solution and compare your method step by step.
- Use the difficulty and calculator filters to focus on what you need most.