Scatter Graphs (AQA GCSE Maths): Flashcards
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10 cards from this deck
Correlation
Correlation
The connection between two variables shown on a scatter graph
Positive correlation
Positive correlation
Both variables increase together; uphill pattern left to right
Negative correlation
Negative correlation
One increases while the other decreases; downhill pattern
No correlation
No correlation
No clear pattern; points randomly scattered with no relationship
Strong correlation
Strong correlation
Points form fairly straight line, close to line of best fit
Weak correlation
Weak correlation
Pattern exists but points more spread out from line of best fit
Interpolation
Interpolation
Predictions within the range of existing data (more reliable)
Extrapolation
Extrapolation
Predictions outside the range of data (less reliable)
Outlier
Outlier
A data point that doesn't fit the general pattern
Does correlation mean causation?
Does correlation mean causation?
No - correlation doesn't prove one variable causes the other