
MAD TO MEDIANName:
where MAD and \( \tilde{x} \) denote the median absolute deviation from the median and the median, respectively. This is the statistic computed by this command. This statistic is a robust alternative to the coefficient of variation.
<SUBSET/EXCEPT/FOR qualification> where <y> is a response variable; <par> is a parameter where the MAD TO MEDIAN value is saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
<SUBSET/EXCEPT/FOR qualification> where <y1> is the first response variable; <y2> is the second response variable; <par> is a parameter where the difference of the MAD to median values is saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET D = MAD TO MEDIAN Y1 SUBSET TAG > 2
LET D = DIFFERENCE OF MAD TO MEDIAN Y1
This change was made to reflect the more common
LET Y1 = DOUBLE EXPONENTIAL NUMBERS FOR I = 1 1 100 LET D = MAD TO MEDIAN Y1Program 2: . Step 1: Create the data . skip 25 read gear.dat y x skip 0 set write decimals 6 . . Step 2: Define plot control . title case asis title offset 2 label case asis . y1label Coefficient of Dispersion (MAD to Median) x1label Group title MAD to Median for GEAR.DAT let ngroup = unique x xlimits 1 ngroup major x1tic mark number ngroup minor x1tic mark number 0 tic mark offset units data x1tic mark offset 0.5 0.5 y1tic mark label decimals 3 . character X line blank . set statistic plot reference line average mad to median plot y x . tabulate mad to median y x Cross Tabulate MAD TO MEDIAN (Response Variables: Y )  X  MAD TO MEDIAN  1.000000  0.003005 2.000000  0.002503 3.000000  0.002510 4.000000  0.003009 5.000000  0.004022 6.000000  0.007018 7.000000  0.003998 8.000000  0.002000 9.000000  0.002505 10.000000  0.002008Program 3: SKIP 25 READ IRIS.DAT Y1 TO Y4 X . LET A = DIFFERENCE OF MAD TO MEDIAN Y1 Y2 SET WRITE DECIMALS 4 TABULATE DIFFERENCE OF MAD TO MEDIAN Y1 Y2 XCross Tabulate DIFFERENCE OF AAD TO MEDIAN (Response Variables: Y1 Y2 )  X  DIFFERENCE OF A  1.0000  0.0335 2.0000  0.0121 3.0000  0.0051. XTIC OFFSET 0.2 0.2 X1LABEL GROUP ID Y1LABEL DIFFERENCE OF MAD TO MEDIAN CHAR X LINE BLANK DIFFERENCE OF MAD TO MEDIAN PLOT Y1 Y2 X  
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Date created: 01/24/2017 