## CCSS.Math.Content.8.SP.A.2 - 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.

Authors: National Governors Association Center for Best Practices, Council of Chief State School OfficersTitle: CCSS.Math.Content.8.SP.A.2 Know That Straight Lines Are Widely Used To Model... Statistics and Probability - 8th Grade Mathematics Common Core State Standards

Publisher: National Governors Association Center for Best Practices, Council of Chief State School Officers, Washington D.C.

Copyright Date: 2010

(Page last edited 10/08/2017)

- Creating a Scatter Plot in Excel - A long tutorial (27 pages if printed) on making your own scatter plot
- Creating an XY (Scatter) Plot in Excel - A seven page tutorial on how to use Excel to make a scatter plot
- Functions and the Vertical Line Test - discussions and activities designed to lead the students to explore the vertical line test for functions. Plotting points and drawing simple piecewise functions are practiced along the way.
- How to Use Your TI-83 or 84 Calculator to Make a Scatter Plot - Provided by MathBits
- Interactive Box Plot - Students enter data and make their own scatterplot with this National Library of Virtual Manipulatives page
- Interactive Scatter Plot - From Shodor
- Interactive Scatterplot - Students enter data and make their own scatterplot with this National Library of Virtual Manipulatives page
- Introduction to Bivariate Data - Several good examples of scatter plots are included
- Line Graphs and Scatter Plots - Several good examples
- Line of Best Fit - Using graph paper and a strand of spaghetti (uncooked) [from the Internet archive known as the Wayback Machine.]
- Line of Best Fit - Using a graphing calculator [from the Internet archive known as the Wayback Machine.]
- Line of Best Fit - This activity (from Illuminations) allows the user to enter a set of data, plot the data on a coordinate grid, and determine the equation for a line of best fit.
- Line of Best Fit Applet - You can enter up to 10 points in the given chart
- Line of Best Fit Explanation - Why the line of best fit does not always touch as many points as possible on a scatter plot [format: discussion between student and mentor]
- Linear Regression - An applet which allows your students to investigate a regression line, also known as a "line of best fit."
- Linear Regression and Correlation - This lesson is designed to introduce students to correlation between two variables and the line of best fit.
- Regression Activity - Regression is used to find the equation used to relate the two variables. This equation can tell you if the two variables are positively or negatively related.
- Scatter Plot - Includes examples of positive association, negative association, and no trend
- Scatter Plot - Links to ten different examples are included with this Engineering Statistics Handbook entry
- Scatter Plot - Wikipedia entry
- Scatter Plots - From the Business Knowledge Center
- Scatter Plots - Includes examples of perfect correlation, high correlation, and low correlation
- Scatter Plots - From Oswego City School District Regents Exam Prep Center [from the Internet archive known as the Wayback Machine.]
- Scatterplot with Overlaid Linear Prediction Plot - Includes links to other plots on the right
- Scatterplot with Overlaid Linear Prediction Plot - Includes links to eleven other plots
- Scatterplots worksheet - Worksheet to use with an activity from North Canton City Schools
- The Regression Line and Correlation - A lesson plan from Illuminations
- Using a Graphing Calculator to Display the Line of Best Fit - Specific to the TI-83+/84+ graphing calculator
- Using Excel to Display a Scatter Plot - An Internet4Classrooms step-by-step tutorial on making your own scatter plots
- Using Residuals to Identify a Line of Good Fit - A discussion between student and mentor
- Vertical Line Test - This activity allows the user to attempt to build curves that pass the vertical line test, so that they are functions.

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