This applet allows you to investigate a regression line, sometimes known as a "line of best fit."

In this activity, students will explore finding the line of best fit based on the sum of the squares of the residuals and determine what the linear regression line is.

Students can use the TI-84 Plus family to enter data, do a scatter plot and find the line of best fit and explain how they could use it to predict future values.

[Free Registration/Login may be required to access all resource tools.] Use linear interpolation, linear extrapolation, and the line of best fit to make predictions about a data set.

The student is given actual data and asked to find a line of best fit and to give "real world" interpretations of the slope and y-intercept. A great introduction to the 83/84 and its features.

Students submit their own data that can be modeled by a linear function. Students find the line of best fit, and discuss graphs of linear functions.

Students compare multiple independent variables as predictors of one dependent variable. Students explore correlation and lines of best-fit.

Students will explore the data on boat registrations and manatee deaths in Florida. They will use the data, the graph of the data and the line of best fit to make predictions about the relationship of the data.

Based off of the hit television show NUMB3RS, this two-part lesson begins by having students try to find the line of best fit for a given set of data (strike outs vs. home runs). The second part of the lesson shows how least squares...

Students perform an experiment that simulates a leaking pipe and gather data on volume of water lost over time. They graph the data collected as a scatter plot, find the equation of the line of best fit, find the total volume of water...

This task looks at a possible relationship between the weight of an animal's body and the weight of its brain. Students make a scatter plot of data, look for outliers, make a second scatter plot without the outliers, and describe the...

Students determine how the temperature of water affects the dissolving time of a sugar cube. They create, interpret and analyze graphs of data, find an equation of the line of best fit, and relate slope to rate of change.

Students calculate a linear regression model using a graphing calculator. The given points are available in PDF format.

Students calculate a linear regression model using a graphing calculator. The given points are available in PDF format.

This lesson introduces students to Activity Center and introduces students to the use of symbolic algebra to represent real world situations. They will use Activity Center to contribute equations that model a linear relationship and then...

Find activities here for linear functions, slopes and regression lines. Use them for classroom work or individual assignments.

This activity compares children's age to height to teach linear regressions. The handout includes notes for students and teachers with a step-by-step instructional activity on how to do three types of linear regressions - Best Fit line,...

Three lessons on different types of data (qualitative, quantitative, univariate, bivariate, biased data) as well as a practice activity and teacher resource.

In this activity, students will identify outliers that are influential with respect to the least-squares regression line. Students will describe the role of the location of a point relative to the other data in determining whether that...

This task asks students to identify when two quantitative variables show evidence of a linear association and to describe the strength and direction of that association. Students will use a scatterplot showing the finishing times for the...

Given a scatterplot where a linear function is the best fit, the student will interpret the slope and intercepts, determine an equation using two data points, identify the conditions under which the function is valid, and use the linear...

Given an experimental situation, the student will write linear functions that provide a reasonable fit to data to estimate the solutions and make predictions.

A collection of lesson ideas, a practice activity, and teacher resources for exploring regression analysis.

[Free Registration/Login may be required to access all resource tools.] Use a calculator to create a scatter plot and to determine the equation of the line of best fit.