Making Prediction Line of Best Fit Scatter Plots

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Tags

8.5.D

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

• A

• B

• C

• D

Tags

Scatter Plots

Line of Best Fit

Statistics

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

Tags

CCSS.HSF-LE.A.1B

What is a scatter plot?

• A graph that shows the relationship of two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

Which choice best defines the term "linear function"?

• An equation that is the bomb diggity

• An equation that can be written in slope-intercept form

• An equation with an exponent in it

• An equation that has a slope but not a y-intercept

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which line is the best fit for the data?

• 
• 
• 
• 

Tags

CCSS.8.EE.B.5

Which line is the best fit for the data?

• 
• 

Tags

CCSS.8.EE.B.5

What are the coordinates of the outlier?

• (9,1)

• (0,3)

• (1,9)

• There is not an outlier.

Tags

CCSS.HSF-LE.A.1B

TRUE OR FALSE: A line of best fit must go through the origin.

• True

• False

Tags

CCSS.8.EE.B.5

A researcher gathered data to predict the number of new types of plants (y) that will be in a state park after x years. After making a scatter plot of the data, she determined the equation of a line of best fit to be y = 0.25x + 8. Based on the equation, what is the number of new types of plants that will be in the park after 24 years?

• 8

• 14

• 32

• 64

Tags

CCSS.HSF.LE.B.5