Interpolation and extrapolation (AQA GCSE Statistics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
What is interpolation in statistics?
What is interpolation in statistics?
Estimating values within the range of existing data.
What is extrapolation in statistics?
What is extrapolation in statistics?
Predicting values outside the range of existing data.
Why is interpolation considered reliable?
Why is interpolation considered reliable?
It uses known patterns within the data range.
Why is extrapolation less reliable?
Why is extrapolation less reliable?
It assumes patterns continue beyond measured data.
What is the formula for calculating the mean of data points?
What is the formula for calculating the mean of data points?
Sum of values divided by the number of values.
Estimate lifetime for 15cm candle using interpolation.
Estimate lifetime for 15cm candle using interpolation.
Lifetime is 21.5 hours based on the line of best fit.
Predict lifetime for 22cm candle using extrapolation.
Predict lifetime for 22cm candle using extrapolation.
Lifetime is 29 hours, but it's less reliable.
Estimate price for 2-year-old car using interpolation.
Estimate price for 2-year-old car using interpolation.
Price is reliable as it falls within the data range.
What is a risk of extrapolating car prices for 6.5 years?
What is a risk of extrapolating car prices for 6.5 years?
Extrapolated prices may not reflect actual market values.
What does the line of best fit pass through?
What does the line of best fit pass through?
The mean point of your data set.