
MEDIAN ABSOLUTE DEVIATIONName:
where \( \tilde{x} \) is the median of the variable. This statistic is sometimes used as a robust alternative to the standard deviation as a measure of scale. The scaled MAD is defined as
For normally distributed data, the scaled MAD is approximately equal to the standard deviation.
<SUBSET/EXCEPT/FOR qualification> where <y> is the response variable; <par> is a parameter where the computed median absolute deviation is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
<SUBSET/EXCEPT/FOR qualification> where <y> is the response variable; <par> is a parameter where the computed scaled median absolute deviation is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = MEDIAN ABSOLUTE DEVIATION Y1 SUBSET TAG > 2 LET A = SCALED MEDIAN ABSOLUTE DEVIATION Y1
MADN is a synonym for SCALED MEDIAN ABSOLUTE DEVIATION NORMALIZED is a synomym for SCALED
2016/02: Added SCALED MEDIAN ABSOLUTE DEVIATION LET Y1 = LOGISTIC RANDOM NUMBERS FOR I = 1 1 100 LET A1 = MEDIAN ABSOLUTE DEVIATION Y1 LET A2 = SCALED MEDIAN ABSOLUTE DEVIATION Y1Program 2: SKIP 25 READ GEAR.DAT DIAMETER BATCH TITLE AUTOMATIC XLIMITS 1 10 MAJOR XTIC MARK NUMBER 10 MINOR XTIC MARK NUMBER 0 XTIC OFFSET 1 1 X1LABEL BATCH Y1LABEL MEDIAN ABSOLUTE DEVIATION OF DIAMETER MAD PLOT DIAMETER BATCH  
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Date created: 04/11/2016 