Equation (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 the equation of a line of best fit?
What is the equation of a line of best fit?
y = ax + b
What does the gradient 'a' represent?
What does the gradient 'a' represent?
Rate of change
How do you find the gradient between two points?
How do you find the gradient between two points?
Divide y difference by x difference
What does a positive gradient indicate?
What does a positive gradient indicate?
Line slopes upward
How can you find the y-intercept 'b' if not on the graph?
How can you find the y-intercept 'b' if not on the graph?
Use y-value at x=0
What is another name for the line of best fit?
What is another name for the line of best fit?
Regression line
If the gradient is 0, what does this mean?
If the gradient is 0, what does this mean?
No change in y
What does the y-intercept tell us in context?
What does the y-intercept tell us in context?
Value when x=0
What should you do if the data points don't all lie on the line?
What should you do if the data points don't all lie on the line?
Accept the general trend
When interpreting gradients, what must you always do?
When interpreting gradients, what must you always do?
Explain in context