Scatter Graphs, Correlation and Regression

Start with scatter diagrams

The Scatter Graphs, Correlation and Regression topic brings together resources on comparing variables and looking for relationships in data. Start with the Scatter Diagrams mind map. It describes a scatter diagram as a way to compare two variables plotted as coordinates. The Scatter Graphs slide set also introduces the idea of plotting two sets of data to look for a connection.

As you study, use the mind map to recall what the axes and points represent. Then use the slides to think about how a graph can show a relationship between the data sets.

Move from points to trends

The note Lines of best fit introduces a line of best fit as a way to find trends among plotted points. Follow it with the Scatter Graphs mind map, which connects correlation with how closely points follow a line. A separate mind map on bivariate distribution lists positive and negative correlation, scatter diagrams and lines of best fit together.

Use these resources alongside one another: review the note’s description of a line, then return to the maps to connect that idea with correlation. The page has no quizzes, so the maps and notes can help you check what you can explain in your own words.

Explore regression

A mind map on correlation and regression brings together bivariate data, dependent and independent variables, regression functions and linear correlation. Another mind map focuses on linear regression and lists assumptions about observations and residuals. These resources offer a way to move from interpreting a scatter graph to exploring a linear relationship.

Use the topic within the unit

This topic is one section of Statistics and Data Handling in Mathematics. The Statistics mind map connects constructing scatter graphs and interpreting a line of best fit with other work in the unit, including frequency diagrams. Pick a mind map to study alongside the note, and use it to organize the ideas you want to revisit.