By R. Dennis Cook
Covers using dynamic and interactive special effects in linear regression research, targeting analytical images. positive factors new suggestions like plot rotation. The authors have composed their very own regression code, utilizing Xlisp-Stat language known as R-code, that's an almost entire method for linear regression research and will be applied because the major desktop software in a linear regression direction. The accompanying disks, for either Macintosh and home windows pcs, include the R-code and Xlisp-Stat.
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Additional resources for An introduction to regression graphics
8. Choosing names. enclose the name in quotation marks. After pushing “OK,” you will be prompted for names for the other columns; use X 2 , X 3 , X 4 , and Y . 9. The default name of the regression is reg. You might want to change this to something more descriptive. At this point you can either start regression analysis, save the data and labels to a file, or both. 9,just double click on “X4” and push “Done” to start analysis. ” To save the data and labels, push the button “Save to File” in the regression dialog.
The labels on the axes are not changed after a transformation; to see the power, you must look at the numbers above the slide bars. 67, f 0 . 75, and 2. 3. 5 has been applied to BrainWr. It~ doesn't )). give a very good representation of the data, although it does seem a little better than the plot of the untransformed data. Manipulate the sliders a bit and see if you can find a better pair of transformations for the brain weight data. 33 TWO-DIMENSIONAL PLOTS - 0 0 0 s! 5. Both BodyWr and BrainWr are transformed according to the values given on the slide bar.
When the “Show Labels” option is on, a check will appear beside the “Show Labels” menu item. To turn the option off, select “Show Labels” again. If no labels are supplied, the data points will be labelled according to the order in which they appear in the data file. Xlisp-Stat always starts numbering at zero, so the first case in the file is number 0, and the eleventh case is number 10. Labels are assigned to cases in the standard regression dialog in the R-code. To find the coordinates of a point, select the item “Mouse Mode.
An introduction to regression graphics by R. Dennis Cook