Desmos graphing calculator linear regression

ProjectInformation/LinearModelInfo/LinearModel-TechnologyTips.html
To complete the Linear Model portion of the project, you will need to use technology (or hand-drawing) to create a scatterplot, find the regression line, plot the regression line, and find r and r2.

Below are some options, together with some videos. Each video is limited to 5 minutes or less. It takes a bit of time for the video to initially download. When playing the video, if you want to slow it down to read the text, hit the pause icon. (If you run the mouse over the bottom of the video screen, the video controls will appear.) You may need to adjust the volume.

The basic options are to:

(1) Generate by hand and scan.

(2) Use a free online tool

Use the free Desmos calculator: See DesmosLinearRegressionGuide.pdf to view how to generate a scatterplot and carry out linear regression.

The result of the free tool might not be as nice looking as the Microsoft Excel version, but it is free, accurate and easy to use.

(3) Use Microsoft Excel.

Visit Scatterplot - Start (VIDEO) to see how to create a scatter plot using Microsoft Excel and format the axes.

Visit Scatterplot - Regression Line (VIDEO) to see how to add labels and title to the scatterplot, how to generate and graph the line of best fit (regression) and obtain the value of r2 in Microsoft Excel.

Using Excel to obtain precise values of slope m and y-intercept b of the regression line: Video, Spreadsheet

(4) Use Open Office.

(5) Use a hand-held graphing calculator (See section 2.5 in your textbook for help with Texas Instruments hand-held calculators.)

The Linear Project Example uses Microsoft Excel.

ProjectInformation/LinearModelInfo/DesmosLinearRegressionGuide.pdf
Desmos Graphing Calculator and Linear Regression

You can use the free online Desmos Graphing Calculator to produce a scatterplot and find the regression line and correlation

Go to https://www.desmos.com/calculator and lau

Select "table" from the menu at the upper left.

Desmos Graphing Calculator and Linear Regression

You can use the free online Desmos Graphing Calculator to produce a scatterplot and find the regression line and correlation

unch the calculator.

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You can use the free online Desmos Graphing Calculator to produce a scatterplot and find the regression line and correlation coefficient.

Data for Project Example (Men's 400 Meter Dash) has been entered. Regression help can be accessed via the "?" ic

Data for Project Example (Men's 400 Meter Dash) has been entered. Regression help can be accessed via the "?" ic

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Data for Project Example (Men's 400 Meter Dash) has been entered. Regression help can be accessed via the "?" icon.

Select "expression" from the menu at the upper left.

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Type y1 ~ mx1 + b and the values of r 2 , r, m, and b automatically appear.

automatically appear.

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Selecting the tool at the upper right, you can then adjust the scales on the x and y axes and create labels.

Selecting the tool at the upper right, you can then adjust the scales on the x and y axes and create labels.

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You can give your graph a name. In order to save your graph, sign in with a free account and click the share button. If you share the given link, then by

followiing the link, the graph can be opened and manipulated. If you click the Image button, then you can save the graph as a

. In order to save your graph, sign in with a free account and click the share button. If you share the given link, then by

followiing the link, the graph can be opened and manipulated. If you click the Image button, then you can save the graph as a

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. In order to save your graph, sign in with a free account and click the share button. If you share the given link, then by

followiing the link, the graph can be opened and manipulated. If you click the Image button, then you can save the graph as a file.

After clicking the Image button, you can view the graph as a stand

After clicking the Image button, you can view the graph as a stand-alone image, and select from several options to save.

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ProjectInformation/LinearModelInfo/ScatterPlotStart.swf
ProjectInformation/LinearModelInfo/ScatterPlotRegressionLineR-Squared.swf
ProjectInformation/LinearModelInfo/MSExcel-m-b-RegressionLine.swf