[Scroll down!] Let (c,d) be a fifth "wandering point." Investigate the influence of this fifth wandering point on the correlation and slope. Note whether the wandering point has either no residual or an estimated small, medium, or large residual. Also note what kind of leverage the wandering point has: none, low, or high. Use the sliders to change the wandering point. You can also animate the wandering point to see how the regression model, y2, and correlation changes.
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*Adapted from the copyrighted Bock, Velleman, and De Veaux "Stats: Modeling the World" class activity 'The Wandering Point' with permission from the author.
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