
DIFFERENCE OF SKEWNESSName:
with s and n denoting the standard deviation and the number of observations, respectively. For the differeence of skewnesss, the skewness is computed for each of two samples then their difference is taken.
where <y1> is the first response variable; <y2> is the first response variable; <par> is a parameter where the computed difference of the skewnesss is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = DIFFERENCE OF SKEWNESS Y1 Y2 SUBSET X > 1
CROSS TABULATE DIFFERENCE OF SKEWNESS PLOT Y1 Y2 X BOOTSTRAP DIFFERENCE OF SKEWNESS PLOT Y1 Y2 TABULATE DIFFERENCE OF SKEWNESS Y1 Y2 X CROSS TABULATE DIFFERENCE OF SKEWNESS Y1 Y2 X LET Z = CROSS TABULATE DIFFERENCE OF SKEWNESS Y1 Y2 X1 X2 Enter
HELP STATISTIC PLOT for more information on these plots and commands. Default:
SKIP 25 READ IRIS.DAT Y1 TO Y4 X . LET A = DIFFERENCE OF SKEWNESS Y1 Y2 TABULATE DIFFERENCE OF SKEWNESS Y1 Y2 X . XTIC OFFSET 0.2 0.2 X1LABEL GROUP ID Y1LABEL DIFFERENCE OF SKEWNESS CHAR X LINE BLANK DIFFERENCE OF SKEWNESS PLOT Y1 Y2 X CHAR X ALL LINE BLANK ALL BOOTSTRAP DIFFERENCE OF SKEWNESS PLOT Y1 Y2 XDataplot generated the following output.
Date created: 3/27/2003 