- Purpose: Show relationships between two variables
- Correlation: How closely two variables are related
- Positive correlation: As one increases, the other increases
- Negative correlation: As one increases, the other decreases
- No correlation: No clear relationship between variables
- Line of best fit: Shows the general trend in the data
- Outliers: Points that don't fit the general pattern
This key facts covers Key Facts About Scatter Graphs within Scatter Graphs for GCSE Mathematics. Revise Scatter Graphs in Statistics for GCSE Mathematics with 14 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 8 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Scatter Graphs
A scatter graph shows that as temperature increases, ice cream sales also increase. This is an example of:
A scatter graph shows a strong positive correlation between the number of ice creams sold and the number of drowning incidents at a beach. A student says: 'Ice cream causes drowning.' Explain why this conclusion is incorrect.