Averages and range (AQA GCSE Maths): Flashcards
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Practise the cards
10 cards from this deck
What do scatter graphs show?
What do scatter graphs show?
Relationship between two variables via plotted data points
What indicates correlation on scatter graphs
What indicates correlation on scatter graphs
Points forming patterns close to a straight line
Positive correlation
Positive correlation
Both variables increase together; upward-sloping pattern
Negative correlation
Negative correlation
One increases, other decreases; downward-sloping pattern
No correlation
No correlation
No clear relationship; points randomly scattered
Outlier
Outlier
Data point that doesn't follow the general pattern
Line of best fit
Line of best fit
Straight line passing as close as possible to data points, showing overall trend
Interpolation
Interpolation
Predicting values within range of existing data (more reliable)
Extrapolation
Extrapolation
Predicting values outside range of data (less reliable)
Does correlation prove causation?
Does correlation prove causation?
No, it doesn't prove one variable causes changes in another