octave: Statistics
26 Statistics
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Octave has support for various statistical methods. This includes basic
descriptive statistics, probability distributions, statistical tests,
random number generation, and much more.
The functions that analyze data all assume that multi-dimensional
data is arranged in a matrix where each row is an observation, and each
column is a variable. Thus, the matrix defined by
a = [ 0.9, 0.7;
0.1, 0.1;
0.5, 0.4 ];
contains three observations from a two-dimensional distribution. While
this is the default data arrangement, most functions support different
arrangements.
It should be noted that the statistics functions don’t test for data
containing NaN, NA, or Inf. These values need to be detected and dealt
with explicitly. See 
isnan XREFisnan, isna XREFisna,
isinf XREFisinf, isfinite XREFisfinite.
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