May be missing values are treated differently ? 
Matt  
-----Original Message-----
From: Rod Hunter [mailto:[email protected]]
Sent: Thursday, January 30, 2003 4:18 PM
To: [email protected]
Subject: st: Idenity of entitiy at pctile value 
A very rudimentary question:
I want to identify the entity that corresponds with the 90th percentile 
for area.
I have performed _pctile, and generated a new variable based on the 
result of _pctile. I have then used tabstat to identify the entity 
corresponding with the p90 for area. That's fine. I get an answer, 
including the value of p90 for area (902720)
I also tried rtab, with the following results:
...
49.	909860	1	0.20	90.34
50.	908485	1	0.20	90.14
51.	906000	1	0.20	89.94
52.	902720	1	0.20	89.74
53.	901632	1	0.20	89.54
...
The tabstat result of 902720 appears to be discrepant with the result of 
rtab.
I would be grateful if someone could explain.
Many thanks
Rod Hunter
Hunarch Consulting
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