 # Scatter Plots (Line of Best Fit)

Related Topics:
Common Core for Mathematics
More Math Lessons for Grade 8

Videos, solutions, examples, and lessons to help Grade 8 students know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.

Common Core: 8.SP.2

### Suggested Learning Targets

• I can show how straight lines are used to model relationships between two quantitative variables.
• I can informally assess the model fit by judging the closeness of the data points to the line
• I can fit a straight line within the plotted data.
Fitting Lines to Scatter Plots (8.SP.2)
Fitting a line to a scatter plot allows you to predict values that don't already have.
This is useful because the slope and y-intercept will allow you to create a linear function in the form y = mx + b.
Modeling and interpreting bivariate measurement data (Common Core Standard 8.SP.2)
In this lesson you will learn how to interpret scatter plots by identifying the line of best fit.

Fitting a line to data Learn Scatter Plots and Best Fitting Lines
This video explains what a scatter plot is and how to find the best fitting line. Scatter Plots and Line of Best Fit How to find the Line of Best Fit?
This video will demonstrate how to find the line of best fit and how to calculate the equation of the line for given data.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.  