Re: different result in two nb reg and pisson reg

Posted by Awan on Sep 16, 2014; 1:24pm
URL: http://spssx-discussion.165.s1.nabble.com/different-result-in-two-nb-reg-and-pisson-reg-tp5727252p5727267.html

Dear Rich,

Thanks for your advice, I used log for both models(Possin and NB reg) also, as you and Andy suggested I transformed the variable of time travel to second, but the results are not different from the last results, still, two model resuls' are not same at all and Sd error in binominal  is still very larger than possin model same last results.
I confece I am not proffesional in SPSS and not familer to many of special words you used such as reciprocal,etc,

furthermore, it should be mentioned that I want to know which factor affect time spent travelling for work,leisure and shopping trips and I do not have any data on distance. for exmaple weman are spent less time travelling to work more than men, etc,
Also, I draw a histogram graph as Andy suggest, but cannot make distinguesh which model has better fitting.  
 
thanks,