Online Algebra Calculator
Many of users do not use powerful Maxima computer algebra system for systematic work, but for ad hoc algebraic calculations – equations, functions, matrixes, etc. only. To do this job, it is not useful to download the whole application from a web site.
Function: var (<list>)

Function: var (<matrix>) This is the sample variance, defined as n ==== 2 1 \ _ 2 s = - > (x - x) n / i ==== i = 1
Example:
(%i1) load (descriptive)$
(%i2) s1 : read_list (file_search ("pidigits.data"))$
(%i3) var (s1), numer;
(%o3) 8.425899999999999 See also function var1.
There are also some inexact matches for var. Try ?? var to see them.
(%o1) true (%i2)