Scatter Plot and Line of Best Fit

What does a scatter plot show?

• The sum of two data sets

• The product of two data sets

• The relationship between two sets of data

• The difference between two data sets

How can a line of fit be used in a scatter plot?

• To predict future outcomes

• To calculate the sum of all data points

• To divide the plot into equal parts

• To color code the data points

What is the first step in writing an equation of a line of fit?

• Make a scatter plot of the data

• Identify two points on the line

• Draw a line on the graph that fits the data

• Determine if the data can be represented by a linear function

What does the slope of a line of fit represent?

• The decrease in y for a unit increase in x

• The increase in y for a unit increase in x

• The total sum of all data points

• The average value of the data set

Which equation best represents the line of best fit shown below?

• y = 4x

• y = 6x + 4

• y = 3x + 4

• y = 4x + 4

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

• y = 3x + 0

• y = 5/6x + 490

• y = -2x + 470

• non linear

• y = x ; 20
• y = x + 2 ; 22
• y = 2 ; 2
• y = 0.5x + 2 ; 12

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

Imagine you're helping Zoe, Mia, and Isla find the perfect line of best fit for their scatter plot project. Which of the following lines do you think will earn them an A+?

• A

• B

• C

• D

Answer explanation

Line C is the best choice as it closely follows the trend of the data points in the scatter plot, minimizing the distance from the points to the line, which is essential for a strong line of best fit.

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

• A

• B

• C

• D