Scatter Graphs (Edexcel GCSE Maths): Flashcards
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Graph type showing relationship between two variables
Graph type showing relationship between two variables
Scatter graph
Term for relationship strength between two variables
Term for relationship strength between two variables
Correlation
Line passing through general pattern of scatter data
Line passing through general pattern of scatter data
Line of best fit
Correlation when points form fairly straight line
Correlation when points form fairly straight line
Strong correlation
Correlation when points show pattern but loosely scattered
Correlation when points show pattern but loosely scattered
Weak correlation
Correlation: uphill line, both variables increase together
Correlation: uphill line, both variables increase together
Positive correlation
Correlation: downhill line, opposite variable changes
Correlation: downhill line, opposite variable changes
Negative correlation
Correlation: randomly scattered points, no clear pattern
Correlation: randomly scattered points, no clear pattern
No correlation
Line direction for positive correlation
Line direction for positive correlation
Uphill (left to right)
Line direction for negative correlation
Line direction for negative correlation
Downhill (left to right)
Term: predicting within existing data range
Term: predicting within existing data range
Interpolation
Term: predicting outside existing data range
Term: predicting outside existing data range
Extrapolation
More reliable prediction method
More reliable prediction method
Interpolation (within data range)
Two aspects to mention when describing correlation
Two aspects to mention when describing correlation
Strength and direction