Interactive Applets – Linear Regression

Try these interactive demonstrations.

To see the effect of outliers on a regression equation, use the applet introduced earlier. Draw points on the graph, add the regression line and then add an outlier or move an observation to see how the regression line changes.

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Here is another similar applet that can be used to illustrate outliers and guessing lines of best fit.

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Here is an interactive demonstration from the Rosman/Chance collection which has extensive options and illustrates many ideas about linear regression and correlation.

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And, remember the two-variable calculator we introduced earlier.

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This document is linked from Linear Relationships – Linear Regression.