Description
This is the sample variance, defined as
n
====
2 1 \ _ 2
s = - > (x - x)
n / i
====
i = 1
Example:
(%i1) load (descriptive)$
(%i2) load (numericalio)$
(%i3) s1 : read_list (file_search ("pidigits.data"))$
(%i4) var (s1), numer;
(%o4) 8.425899999999999
See also function .