Scatterplot Finding Line of Best Fit

How do you determine the slope of the line of best fit in a scatterplot?

• By finding the ratio of the rise over the run between two points on the line

• By counting the number of points above the line

• By measuring the distance from the origin to the line

• By drawing a circle around the line

Tags

CCSS.8.EE.B.5

If a scatterplot shows a downward trend as the x-values increase, what type of slope does the line of best fit have?

• Positive slope

• Negative slope

• Zero slope

• Undefined slope

Tags

CCSS.8.EE.B.5

If a scatterplot shows a collection of points in a straight line going from the bottom left to the top right, what kind of correlation does it indicate?

• Positive correlation

• Negative correlation

• No correlation

• Cannot be determined

What is the purpose of drawing a line of best fit on a scatterplot?

• To predict new values

• To connect all the dots

• To make the plot look neat

• To separate different data groups

When drawing a line of best fit by hand, what is the most important aspect to consider?

• The line must pass through every point

• The line should have an equal number of points on either side

• The line should pass through the origin

• The line must be perfectly straight

Tags

CCSS.8.EE.B.5

If the line of best fit has a slope of zero, what does this indicate about the relationship between the variables?

• Positive correlation

• Negative correlation

• No correlation

• Perfect correlation

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

Tags

CCSS.8.EE.B.5

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

Tags

CCSS.8.EE.B.5