Line of Best Fit Flashcards
1
Q
Finish the sentence:
“The line of best fit should be drawn through…”
A
The mean point (mean x-value, mean y-value)
2
Q
What is interpolation?
A
Using the line of best fit to estimate data values WITHIN the range of data - this is usually reliable
3
Q
What is extrapolation?
A
Uswinf the line of best fit to estimate data values OUTSIDE of the range of data - less reliable the further they are from the original range of data
4
Q
What is the formula for the equation of the line of best fit?
A
y = ax + b
5
Q
What is the formula for the y-intercept of the line of best fit?
A
b = y1 - ax1
