Understanding Lines of Best Fit in Scatter Graphs

What is the primary purpose of a line of best fit in a scatter graph?

• To mark the origin of the graph

• To show the general trend of the data

• To highlight the highest data point

• To connect all the data points

Which of the following is NOT a requirement when drawing a line of best fit?

• It must pass through the origin

• It should follow the steepness of the plots

• There should be a balance of plots above and below the line

• It should extend through the middle of the scatter plots

When drawing a line of best fit, what should you ensure about the plots?

• The line should only touch the highest plot

• There should be an equal number of plots above and below the line

• All plots should be below the line

• All plots should be above the line

How can a line of best fit be used once it is drawn?

• To delete outliers from the data

• To identify the maximum value in the data

• To estimate values based on the data

• To change the scale of the graph

What should you do if a scatter plot shows no correlation?

• Draw a horizontal line

• Draw a vertical line

• Do not draw a line of best fit

• Draw a line through the origin