Correlation & Regression
What correlation & regression means
Relationships between variables and lines of best fit.
Before you start
Not confident yet? Work through Sampling & Estimation first.
Worked example
One question from this skill's own question bank, shown with its full working.
A positive correlation between two variables means that
- as one increases, the other tends to increase
- they are unrelated
- as one increases the other must decrease
- both are constant
Working: Positive correlation shows variables moving together.
Curriculum and exam alignment
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Related skills
Other Inference & Relationships skills in Statistics & Data Science, at the same point in the course.
Other Statistics & Data Science topics
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Practise correlation & regression
6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.