% @(#)stest_mean.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:11:30 
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
%.COPYRIGHT  (c)  1990 European Southern Observatory
%.IDENT      stest_mean.hlq
%.AUTHOR     MP, IPG/ESO
%.KEYWORDS   MIDAS, help files, STEST/MEAN
%.PURPOSE    On-line help file for the command: STEST/MEAN
%.VERSION    1.0  03-NOV-1989 : Creation, MP
%----------------------------------------------------------------
\se
SECTION./MEAN
\es\co
STEST/MEAN			              03-NOV-1989 MP
\oc\su
STEST/MEAN table col1 col2 
	student t-test for different means
\us\pu
Purpose:      
             Given two columns of a table, performs the Student t-test
             for significantly different means
\up\sy
Syntax:       
             STEST/MEAN table col1 col2 
\ys\pa
             table = name of the table
\ap\pa
             col1  = first column
\ap\pa
             col2 = second column
\ap\no
Note:        
             The data sets are assumed to be drawn from populations with the 
             same variance. The command will return the value of Student's t 
             as well as the probability of exceeding its value under the Null 
             Hypothesis, the Null Hypothesis being : \\
             "The data sets have consistant means"
\on\exs
Examples:
\ex
            none
\xe \sxe