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Adding a Data Point to a Scatterplot |
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| Authors: | Markku Nurhonen Simo Puntanen |
| Abstract: | Students who have been taught regression properly are certainly familiar with the dangers and curiosities to which the regression analysis leads when only two data points are available. However, one may ask whether students are familiar with the effects of adding a third observation into this data set. The purpose of this article is to illustrate some unexpected phenomena related to this situation using a specific map technique. |
| Keywords: | Teaching Correlation Residual Regression |