Scatter Graphs

For more information on scatter graphs see Bitesize National 4 Lifeskills Maths Statistics.

A scatter graph is used to investigate whether or not two variables are related.

Scatter diagram showing positive correlation between IQ and result in general knowledge testScatter diagram showing negative correlation.

In each of the two cases above the scatter graph shows a relationship or correlation.

In the first case it's a positive correlation.

In in the second case it's a negative correlation.