Mathematics·Data & Statistics·conceptual
Scatter Graphs & Correlation
Describe simple mathematical relationships between two variables using scatter graphs, identify positive, negative, or no correlation, and use a line of best fit to make predictions
Suggested ages 13–14
Evidence of understanding
- Plot bivariate data on a scatter graph and describe the type of correlation observed
- Draw a line of best fit by eye and use it to estimate a value within the data range
- Explain what positive, negative, and no correlation mean in the context of real data (e.g., temperature vs. ice-cream sales)
Assessment prompt
If Scatter Graphs & Correlation plotted a scatter graph — say, comparing hours of revision and test scores — could they draw a line of best fit, describe the pattern, and use it to make a prediction?
Standards alignment
8.SP.1US · ccss-math
Scatter plots and association
Common Core State Standards for Mathematics · 8
8.SP.2US · ccss-math
Linear models for data
Common Core State Standards for Mathematics · 8
8.SP.3US · ccss-math
Interpreting linear models
Common Core State Standards for Mathematics · 8
KS3.Maths.Stat.3GB · uk-nc-2013
Bivariate Data and Scatter Graphs
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 3