I am going over an excellent Econometrics bookk,called "Microeconometrics
Using Stata" by A.C Cameron and P.V. Trivedi..The problem is that some of
its code is compatible with version 10.1 ,only,while I have not upgraded
above version 9.2,yet.
I have come across the following code on page 143 :
return scalar r2 = abs(return(t2))>invtail($numobs-2,.025) , and
return scalar p2 = 2*ttail($numobs-2,abs(return(t2)))
and apperently ,for version 9 , function invtail() is unknown,whereas
,returning p ,I get a dot "." ,every time I try it.
I would appreciate any help
Thank you very much ,before hand,
Victor m. Zammit
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