atoti.array.var module¶
- atoti.array.var(measure, *, mode='sample')¶
Return a measure equal to the variance of the elements of the passed array measure.
- Parameters
measure (
MeasureDescription
) – The measure to get the variance of.mode (
Literal
[‘sample’, ‘population’]) –One of the supported modes:
The
sample
variance, similar to Excel’sVAR.S
, is \(\frac{\sum_{i=0}^{n} (X_i - m)^{2}}{n - 1}\) wherem
is the sample mean andn
the size of the sample. Use this mode if the data represents a sample of the population.The
population
variance, similar to Excel’sVAR.P
is \(\frac{\sum_{i=0}^{n}(X_i - m)^{2}}{n}\) wherem
is the mean of theXi
elements andn
the size of the population. Use this mode if the data represents the entire population.
- Return type