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From |
Richard Williams <richardwilliams.ndu@gmail.com> |

To |
statalist@hsphsun2.harvard.edu, "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: Nominal or ordinal? |

Date |
Fri, 13 Aug 2010 10:32:08 -0400 |

At 08:42 AM 8/13/2010, Ronan Conroy wrote:

On 12 Lún 2010, at 21:29, David Bell wrote:Most of the world is willing to treat scales like this as interval data. Sure it isn't "exactly" interval. Be sure to consider whether your audience will be familiar with interpretations of ordinal logit regressions.I cannot endorse the behaviour of most of the world, which is usually characterised more by wishful thinking than by reflection. The assumption of normally distributed error is broken for short ordinal scales, and I refuse to believe that Extremely Likely (4) is twice as much belief as Slightly Likely (2). While a scale made up of many such items will probably exhibit interval properties, this does not apply to the items themselves.

Having said that, I find this example interesting: use "http://www.indiana.edu/~jslsoc/stata/spex_data/ordwarm2.dta";, clear tab1 warm reg warm yr89 male white age ed prst ologit warm yr89 male white age ed prst, nolog

------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * 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: Nominal or ordinal?***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**References**:**st: Nominal or ordinal?***From:*"Polis, Chelsea B." <cpolis@jhsph.edu>

**Re: st: Nominal or ordinal?***From:*David Bell <dcbell@iupui.edu>

**Re: st: Nominal or ordinal?***From:*Ronan Conroy <rconroy@rcsi.ie>

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