
DIFFERENCE OF MIDMEANName:
For the difference of midmeans, the midmean is computed for two samples and then their difference is taken.
<SUBSET/EXCEPT/FOR qualification> where <y1> is the first response variable; <y2> is the first response variable; <par> is a parameter where the computed difference of the midmeans is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = DIFFERENCE OF MIDMEAN Y1 Y2 SUBSET X > 1
SKIP 25 READ IRIS.DAT Y1 TO Y4 X . LET A = DIFFERENCE OF MIDMEAN Y1 Y2 TABULATE DIFFERENCE OF MIDMEAN Y1 Y2 X . XTIC OFFSET 0.2 0.2 X1LABEL GROUP ID Y1LABEL DIFFERENCE OF MIDMEANS CHAR X LINE BLANK DIFFERENCE OF MIDMEAN PLOT Y1 Y2 X CHAR X ALL LINE BLANK ALL BOOTSTRAP DIFFERENCE OF MIDMEAN PLOT Y1 Y2 XDataplot generated the following output. ******************************************* ** LET A = DIFFERENCE OF MIDMEAN Y1 Y2 ** ******************************************* THE COMPUTED VALUE OF THE CONSTANT A = 0.29644735E+01 ********************************************** ** TABULATE DIFFERENCE OF MIDMEAN Y1 Y2 X ** ********************************************** * Y1 AND Y2 X * DIFFERENCE OF MIDMEANS ********************************************** 1.00000 * 1.60385 2.00000 * 3.28462 3.00000 * 3.70769 GROUPID AND STATISTIC WRITTEN TO FILE DPST1F.DAT  
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Date created: 03/21/2003 