Statalist The Stata Listserver


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: why is F statistic still missing even though there is no singleton dummy problem?


From   "Jian Zhang" <jzh@ucdavis.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: why is F statistic still missing even though there is no singleton dummy problem?
Date   Thu, 17 Aug 2006 16:50:45 -0700 (PDT)

Dear Statalisters,

I am running a ols regression on a small data set.  The reported F statistic is still mssing 
although the data set doesn' have so-called singleton dummies.  Is there anyone knowing what is 
going on?  Here are the data set and the regression results.  Many thanks!


. list var1 var3 var5 var6

+---------------------------+
      var1   var3   var5   var6 
---------------------------
1.     1    789      0      0 
2.     3     45      0      0 
3.     5   2358     -4      4 
4.     4     65      0      0 
5.     5     12     14     -7 
---------------------------
6.   453     12      0      0 
7.     6      4      0      0 
8.    45      2      0      0 
9.     8      3   -123    123 
10.   897      5      0      0 
---------------------------
11.    43     87      0      0 
12.    43     56      0      0 
13.     4     25      0      0 
+---------------------------+


 reg var1 var3 var5 var6,	robust nocons

Linear regression			Number of obs	=      13
			F(  2,    10)	=       .
			Prob > F	=       .
			R-squared	=  0.0002
			Root MSE	=  318.67

				
	Robust
var1       Coef.	Std. Err.      t	P>t	[95% Conf.	Interval]
				
var3    .0046225	.0031     1.49	0.167	-.0022847	.0115297
var5    .7696625	.0060938   126.30	0.000	.7560848	.7832403
var6    .8329636	.007418   112.29	0.000	.8164353	.8494919
				






Best regards,
Jian Zhang
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index