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SciMax Toolbox >> quartile_skewness

quartile_skewness

Maxima Function

Calling Sequence

quartile_skewness (list)
quartile_skewness(matrix)

Description

The quartile skewness coefficient, defined as

c    - 2 c    + c
 3/4      1/2    1/4
--------------------
    c    - c
     3/4    1/4
where

c_p is the p-quantile of sample list.

Example:

(%i1) load (descriptive)$
(%i2) load (numericalio)$
(%i3) s1 : read_list (file_search ("pidigits.data"))$
(%i4) quartile_skewness (s1), numer;
(%o4)                  .04761904761904762
(%i5) s2 : read_matrix (file_search ("wind.data"))$
(%i6) quartile_skewness (s2);
(%o6) [- 0.0408542246982353, .1467025572005382,
       0.0336239103362392, .03780068728522298, 0.210526315789474]

See also function .

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