Line of best fit (Edexcel GCSE Statistics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a line of best fit used for in a scatter diagram?
What is a line of best fit used for in a scatter diagram?
To represent the trend
What is essential for drawing a line of best fit?
What is essential for drawing a line of best fit?
Passing through the mean point
Why should the line of best fit extend beyond the data points?
Why should the line of best fit extend beyond the data points?
To cover prediction range
What does the mean point (x̄, ȳ) represent?
What does the mean point (x̄, ȳ) represent?
Average x and y values
How can you predict a y-value from a known x-value?
How can you predict a y-value from a known x-value?
Draw vertical line to the line of best fit
When making predictions, what should you remember?
When making predictions, what should you remember?
Predictions are estimates
What error is common when drawing a line of best fit?
What error is common when drawing a line of best fit?
Not passing through the mean point
What is a key feature of a good line of best fit?
What is a key feature of a good line of best fit?
Pass through the mean point
How do you check if your line of best fit is reasonable?
How do you check if your line of best fit is reasonable?
It follows the data trend
What is the primary purpose of the line of best fit?
What is the primary purpose of the line of best fit?
Predict unknown values