The example at http://www.biostat.wustl.edu/archives/html/s-news/1999-06/msg00125.html should give you plenty of clues.
David
On Wednesday, Jul 16, 2003, at 16:26 Europe/London, Andrew Barnes wrote:
Having read previous correspondance on this topic, am I right in using a
gaussian distribution for a tobit model, one article suggests a normal distribution?
Also, I want to censure at the upper bound, so, using the survival5 package I use:
survreg(Surv(y,y<c,type="right")~x) for a censored regression.
Could anybody who's had experience of this, confirm whether I'm in the ballpark?
Grateful thanks Andrew Barnes ======================================= Dr Andrew Barnes Agricultural Management Economist
Modelling and Strategy Group Land Economy Research Department Research Division SAC West Mains Road Edinburgh EH9 3JG
Tel: 0131 535 4042 E.Mail: [EMAIL PROTECTED] Fax: 0131 667 2601 Mobile: 07811 935 022
Website: http://www.sac.ac.uk/management/external/default.htm
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