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From |
Dorothy Bridges <dbstata@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: AW: AW: Creating a variable taking the value of elasticity |

Date |
Tue, 8 Sep 2009 10:32:22 -0400 |

No, there are no 0 or negative values. There are some missing values in the y variable, but these are missing in both y and ln(y). The data is like this: x y 1 5 2 . 3 . 4 7 So ln(y) does have missings, but those are also missing in y. I still don't see, then, how mfx, eyex gives me a value different than the coefficient on lnx in regress lny lnx. Thanks again for all your thoughts. On Tue, Sep 8, 2009 at 10:20 AM, Maarten buis<maartenbuis@yahoo.co.uk> wrote: > --- On Tue, 8/9/09, Dorothy Bridges wrote: >> But what I don't understand is: the second method >> (using mfx, eyex) gives me a different value than >> the first method (storing the coefficient on x >> from *regress lny lnx*). Why? > > Does x or y contain values that are 0 or less? In > that case you are creating missing values by > creating lnx and/or lny. > > -- Maarten > > -------------------------- > Maarten L. Buis > Institut fuer Soziologie > Universitaet Tuebingen > Wilhelmstrasse 36 > 72074 Tuebingen > Germany > > http://www.maartenbuis.nl > -------------------------- > > > > > * > * 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: AW: AW: Creating a variable taking the value of elasticity***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: AW: AW: Creating a variable taking the value of elasticity***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**References**:**Re: st: AW: AW: Creating a variable taking the value of elasticity***From:*Dorothy Bridges <dbstata@gmail.com>

**Re: st: AW: AW: Creating a variable taking the value of elasticity***From:*Maarten buis <maartenbuis@yahoo.co.uk>

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