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Re: st: re: beta coefficients for interaction terms |

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Sun, 21 Jun 2009 17:33:12 +0200 |

To get the beta coefficients I have to run the regression .reg smpg shead slength sia2 If I run the regression .reg mpg shead slength sia2 I get the coefficients, that are not standardized? Am I right? Best, Lisa Zitat von Kit Baum <[email protected]>:

<> Martin said " so it is not telling you anything for which you need to estimate the regression to find out." So the point estimate is equal to ouput of other commands, bout how about the CI? The unconditional CI is larger: . means mpg Variable | Type Obs Mean [95% Conf. Interval] -------------+---------------------------------------------------------- mpg | Arithmetic 74 21.2973 19.9569 22.63769 | Geometric 74 20.58444 19.38034 21.86335 | Harmonic 74 19.92318 18.81185 21.17405 ------------------------------------------------------------------------ because the standardized regressors that are added to the model are indeed correlated with mpg: _cons | 21.2973 .4121741 51.67 0.000 20.47524 22.11935 but as you can see that doesn't make much difference in testing any meaningful hypothesis about the mean of mpg. Kit Baum | Boston College Economics & DIW Berlin | http://ideas.repec.org/e/pba1.html An Introduction to Stata Programming | http://www.stata-press.com/books/isp.html An Introduction to Modern Econometrics Using Stata | http://www.stata-press.com/books/imeus.html * * 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/

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**Follow-Ups**:**Re: st: re: beta coefficients for interaction terms***From:*Alan Neustadtl <[email protected]>

**AW: st: re: beta coefficients for interaction terms***From:*"Martin Weiss" <[email protected]>

**References**:**st: re: beta coefficients for interaction terms***From:*Kit Baum <[email protected]>

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