Understanding Lines of Best Fit
Authored by Ms. Vazquez
Mathematics
8th Grade
CCSS covered
Used 1+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of a line of best fit in a scatter plot?
To predict future data points
To connect all the data points
To represent the data as accurately as possible
To create a visually appealing graph
Tags
CCSS.8.SP.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where should a line of best fit ideally be positioned in relation to the data points in a scatter plot?
Only above all the data points
As close as possible to all the data points
Only below all the data points
Through the first and last data points only
Tags
CCSS.8.EE.B.5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if the line of best fit does not pass through any data points?
Redraw the line to pass through all points
Ensure it is as close as possible to all points
Ignore the outlier points
Only consider points it passes through
Tags
CCSS.8.SP.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the equation of a line of best fit?
Writing the equation
Plotting the data points
Identifying the y-intercept
Calculating the slope
Tags
CCSS.8.EE.B.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct formula for slope in the context of a line of best fit?
Run minus rise
Rise divided by run
Run divided by rise
Rise times run
Tags
CCSS.8.EE.B.5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the slope of a line of best fit?
Subtract the lowest y-value from the highest y-value
Add all the y-values and divide by the number of points
Multiply the highest y-value by the lowest x-value
Divide the change in y by the change in x
Tags
CCSS.8.EE.B.5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a scatter plot going upward from left to right, how should the line of best fit be drawn?
Horizontally from left to right
Vertically from bottom to top
Downward from left to right
Upward from left to right
Tags
CCSS.8.EE.B.5
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