
DIFFERENCE OF AADName:
with \( \bar{x} \) denoting the mean of the variable and n denoting the number of observations. This statistic is sometimes used as an alternative to the standard deviation. For the difference of average absolute deviations, the average absolute deviation 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 average absolute deviations is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = DIFFERENCE OF AAD Y1 Y2 SUBSET X > 1
to compute differences from the median. Since the DIFFERENCE OF AVERAGE ABSOLUTE DEVIATIONS was based on the average absolute deviation computation, these changes apply to it as well.
SKIP 25 READ IRIS.DAT Y1 TO Y4 X . LET A = DIFFERENCE OF AAD Y1 Y2 TABULATE DIFFERENCE OF AAD Y1 Y2 X . XTIC OFFSET 0.2 0.2 X1LABEL GROUP ID Y1LABEL DIFFERENCE OF AAD CHAR X LINE BLANK DIFFERENCE OF AAD PLOT Y1 Y2 X CHAR X ALL LINE BLANK ALL BOOTSTRAP DIFFERENCE OF AAD PLOT Y1 Y2 XDataplot generated the following output. *************************************** ** LET A = DIFFERENCE OF AAD Y1 Y2 ** *************************************** THE COMPUTED VALUE OF THE CONSTANT A = 0.35400003E+00 ****************************************** ** TABULATE DIFFERENCE OF AAD Y1 Y2 X ** ****************************************** * Y1 AND Y2 X * DIFFERENCE OF AVERAGE ABSOLUTE ********************************************** 1.00000 * 0.140000E01 2.00000 * 0.170000 3.00000 * 0.254000 GROUPID AND STATISTIC WRITTEN TO FILE DPST1F.DAT  
Privacy
Policy/Security Notice
NIST is an agency of the U.S. Commerce Department.
Date created: 03/27/2003 