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st: ttest and log transformation


From   "Richard Harvey" <richardharvey2008@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: ttest and log transformation
Date   Sat, 27 Sep 2008 08:40:05 +0100

hi all,

I hope I  can ask if someone could help  with a stats question

I have three variables to compare between two groups. The summary
stats of the variables a b c are as below


Group	          N		mean	      p50	        max	
min	                             Skewness    kurtosis

group1	a	2537	      146045	      6549	     19,051,350.00	
0.00	                                12.04	190.6
	        b	2537	       223580	          0	     46,844,688.00
     0.00	                                18.96	501.6
	        c	2537        -77535	     5278	     19,051,350.00 	
	-46,844,688.00	               -11.23	311.1
								
group2	a	3031 5014 4	      5750       	4,609,995.00	        0.00
             	        11.73	182.6
	        b	3031	      261517	          0	      32,617,714.00
	0.00	                                11.72	195.9
	        c	3031	     -211373	      4620
	4,609,996.00	-32,617,714.00	                       -11.18	185.6
								
Total	       a       5568	       93840	6023     19,051,
350.00	                 0.00	
16.25	359.9
	       b       5568	      244232	            0	     46,844,688.00	
      0.00	                         15.54	364.7
	      c	        5568	      -150391	      4958	     19,051,350.00	
  -46,844,688.00	               -11.33	278


Firstly for a and b
-- 
thanks for your time
rich
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