atoti.array.var()#

atoti.array.var(measure, /, *, mode='sample')#

Return a measure equal to the variance of the elements of the passed array measure.

Parameters:

• measure (VariableMeasureConvertible) – The measure to get the variance of.

• mode (Literal['sample', 'population']) –

  One of the supported modes:

  • The sample variance, similar to Excel’s VAR.S, is $\frac{\sum _{i=1}^n(X_i-m{)}^2}{n-1}$ where m is the sample mean and n the size of the sample. Use this mode if the data represents a sample of the population.

  • The population variance, similar to Excel’s VAR.P is $\frac{\sum _{i=1}^n(X_i-m{)}^2}{n}$ where m is the mean of the Xi elements and n the size of the population. Use this mode if the data represents the entire population.

Return type:

MeasureDescription