Scatter graphs (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does a scatter graph display?
What does a scatter graph display?
Relationship between two variables
When do points show a strong correlation?
When do points show a strong correlation?
When close to forming a straight line
In positive correlation, how do points slope?
In positive correlation, how do points slope?
Upwards from left to right
What happens in negative correlation?
What happens in negative correlation?
One variable increases, other decreases
What does no correlation look like?
What does no correlation look like?
Points randomly scattered, no pattern
What is an outlier?
What is an outlier?
Point that doesn't fit general pattern
When drawing line of best fit, what's true?
When drawing line of best fit, what's true?
Equal points above and below the line
What is interpolation?
What is interpolation?
Predicting within data range
Why is extrapolation less reliable?
Why is extrapolation less reliable?
Goes beyond what you actually know
Which prediction type is more reliable?
Which prediction type is more reliable?
Interpolation
Does correlation always mean causation?
Does correlation always mean causation?
No, may be other factors involved
When are estimates from a scatter graph more reliable?
When are estimates from a scatter graph more reliable?
Strong correlation, close to line