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Daniel Paschek
Participant
Post count: 6

Dear Dr. Shah,

after updating asdocx I now get the following error message: “conformability error”.
I am running a unequal unpaired t-test with the the stat() option:

asdocx ttest CompanyAge if InvRec == 1 & (VCType == "GVC" | VCType == "IVC"), by(VCType) 
> unpaired unequal replace dec(3) stat(obs mean se sd dif t p)  title(T-Test - GVCs vs. IVCs )  lab
> el abb(.) save(VCInv_GVCIVC_ttest_All)  

The output is the following:


Two-sample t test with equal variances
------------------------------------------------------------------------------
Variable |     Obs        Mean    Std. Err.   Std. Dev.   [95% Conf. Interval]
---------+--------------------------------------------------------------------
     GVC |   1,072    5.757696    .2418861    7.919692    5.283071     6.23232
     IVC |   7,379    6.221168    .0935548    8.036464    6.037774    6.404562
---------+--------------------------------------------------------------------
combined |   8,451    6.162377     .087271    8.022764    5.991305     6.33345
---------+--------------------------------------------------------------------
    diff |           -.4634723    .2621968               -.9774422    .0504976
------------------------------------------------------------------------------
    diff = mean(GVC) - mean(IVC)                                  t =  -1.7677
Ho: diff = 0                                     degrees of freedom =     8449

    Ha: diff < 0                 Ha: diff != 0                 Ha: diff > 0
 Pr(T < t) = 0.0386         Pr(|T| > |t|) = 0.0772          Pr(T > t) = 0.9614
conformability error
r(503);

end of do-file

r(503);

Would be great if you could assist