Why must the two values in a bivariate pair come from the same individual or item?
Larger values of one variable tend to accompany larger values of the other.
The explanatory variable is usually plotted on the horizontal axis, while the response variable is usually plotted on the vertical axis.
Otherwise the pairing is meaningless.
Correlation describes the direction of an association, while closeness to the trend describes its strength.
2.5.4 Data presentation and interpretation Flashcards
Flashcards for CCEA A Level Maths 2.5.4 Data presentation and interpretation, covering the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2. 22 cards, matched to the CCEA A Level Maths (2210) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.