Mathematics·Data & Statistics·representational
Scatter Graphs
Plot bivariate data on a scatter graph with correctly labelled axes and appropriate scales; describe the correlation (positive, negative, none) and draw an estimated line of best fit where appropriate
Suggested ages 13–14
Evidence of understanding
- Plot 10 data points on a scatter graph with correct axis labels and a consistent scale
- Draw a line of best fit by eye, ensuring roughly equal numbers of points above and below
- Use the line of best fit to estimate a y-value for a given x-value within the data range
Assessment prompt
If Scatter Graphs has data comparing hours of sleep and test scores for 10 students, can they plot the points on a scatter graph, draw a line of best fit, and use it to predict a score for someone who slept 7 hours?
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
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