High School Maths Examples and Questions

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Scatter Diagrams

Scatter diagrams show the link between two variables. The variables are plotted as coordinates. This link shows the correlation (relationship) between the two variables.

There are 3 types of correlation

1.  Positive correlation
 As the value of the first variable increases so does the second
 
2.  Negative correlation
 As the value of the first variable increases the second decreases
 
3.  No correlation
 No linear relationship between the variables


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