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From |
Stefan Nijssen <stefannijssen@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: creating combined correlation of dummy (ordered multilevel) |

Date |
Fri, 10 Jun 2011 15:58:55 +0200 |

Dear, This is true. The variable AAA AA etc.. is a rating scale, ordered from AAA to B (in original format this was 1 to represent AAA, 2 to represent AA etc. until 6 to represent B, from which through "xi i.Rating, noomit" I created the dummies). I am using the dummies since for instance the distance between AA and A (2 and 3) might not be the same as the distance A and BBB (3 and 4). Therefore I don't think the original variable (with numbers 1 to 6) is the one to read the correlation from, although this would be easiest. The reason for my interest in the correlation is that theoretically the variable Rating is created using variables I use in the regression in the first place. Any idea how to be able to interpret the multicorrelation? Yours, 2011/6/9 Nick Cox <n.j.cox@durham.ac.uk>: > A correlation coefficient is only likely to have meaning if the combined variable in question is at least on an ordered scale. Even to calculate a meaningless correlation for a six-category scale you would need to have such a combined variable. > > Nick > n.j.cox@durham.ac.uk > > Stefan Nijssen > > I am struggling to find the correlation of various variables to a dummy variable (6level ordered). The problem is that since the dummies appear in the table as six variables, I cannot read a single correlation between the combined dummy and any other variable (see below). Does anyone know how to do this? > > Stefan Nijssen > > . correlate AAA AA A BBB BB B wc5 MAR COV > (obs=383) > > | AAA AA A BBB BB B wc5 MAR COV > -------------+--------------------------------------------------------------------------------- > AAA | 1.0000 > AA | -0.0303 1.0000 > A | -0.0767 -0.1249 1.0000 > BBB | -0.1187 -0.1932 -0.4892 1.0000 > BB | -0.0559 -0.0909 -0.2302 -0.3563 1.0000 > B | -0.0504 -0.0820 -0.2077 -0.3214 -0.1513 1.0000 > wc5 | 0.3377 0.1016 0.1805 -0.1683 -0.0769 -0.1032 1.0000 > MAR | 0.0030 0.0101 0.0146 0.0449 -0.0136 -0.0807 0.0176 1.0000 > COV | 0.3052 0.1377 0.2432 -0.0967 -0.1235 -0.2545 0.2121 0.1220 1.0000 > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: RE: creating combined correlation of dummy (ordered multilevel)***From:*Maarten Buis <maartenlbuis@gmail.com>

**References**:**st: creating combined correlation of dummy (ordered multilevel)***From:*Stefan Nijssen <stefannijssen@gmail.com>

**st: RE: creating combined correlation of dummy (ordered multilevel)***From:*Nick Cox <n.j.cox@durham.ac.uk>

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