Interpolation and Extrapolation (HSC SSCE Mathematics Standard): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does interpolation mean when using a regression line?
What does interpolation mean when using a regression line?
Estimating values within existing data
What does extrapolation involve?
What does extrapolation involve?
Predicting values outside the data range
What does the gradient () of a regression line tell us?
What does the gradient () of a regression line tell us?
Change in dependent variable per unit
Where does the vertical intercept () appear on a graph?
Where does the vertical intercept () appear on a graph?
Where the line crosses the y-axis
Which prediction method is generally more reliable?
Which prediction method is generally more reliable?
Interpolation
If data shows a strong linear association, what can we say about predictions?
If data shows a strong linear association, what can we say about predictions?
We can be confident they are accurate
A dataset covers years 2000-2020. Predicting for 2015 is an example of what?
A dataset covers years 2000-2020. Predicting for 2015 is an example of what?
Interpolation
What happens as you extrapolate further from your data?
What happens as you extrapolate further from your data?
Predictions become less reliable
What does the vertical intercept represent?
What does the vertical intercept represent?
Value when independent variable is zero
Why must we be cautious when extrapolating far beyond our dataset?
Why must we be cautious when extrapolating far beyond our dataset?
Relationships may change outside the range