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From |
"Dan Weitzenfeld" <dan.weitzenfeld@emsense.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: z-score as a dependent variable in a linear regression |

Date |
Wed, 14 Nov 2007 16:10:29 -0800 |

Dear Stata Users and Abusers, In general, is it kosher to use a z-score as a dependent variable in a linear regression? Is it "better" to use some sort of ratio measurement? I've reviewed the assumptions of OLS, etc., and I can't find a glaring objection to using a z-score as a dependent variable in a linear regression. However, it feels strange, especially because the units of a z-score are not uniform, in that the difference in probability between a z-scores 0 and .5 is not the same as the difference in probability beween z-scores .5 and 1. In other words, I feel that by using the z-score, I am not giving adequate weight to observations with very high and very low z-scores. Why not use the underlying measurement that was used to derive z-score, you ask? Each individual has a unique baseline and variation, so in order to compare individual responses to my stimuli, I need to put everybody on the same scale. Any feedback or direction to reading material would be helpful. Thank you, Dan * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: z-score as a dependent variable in a linear regression***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**Re: st: z-score as a dependent variable in a linear regression***From:*"Austin Nichols" <austinnichols@gmail.com>

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