Variance Series Function
The Variance series function is used to calculate the variance of the data in the source series. This
series function takes one or multiple source series. If only one source series
is provided, all data in the value
component of the destination series will be assigned with the variance of the
values in the function domain of the
value component of the source series. If multiple source series are provided,
each value in the value component of the destination series is the variance of the
corresponding data in the value components of the individual source series.
Two types of variances are supported: population variance and sample
variance. The user can select the type of variance to calculate on the Variance
tabpage of the Series Function dialog
box.
A population variance is calculated using
A sample variance is calculated using
If multiple source series are provided but their position
components contain incompatible data (e.g. the first contains 1, 2, 4, 5 and
the second contains 1, 2, 3, 5), DataScene will first use cubicspline interpolation
to generate compatible position and value components for the source series
and then calculate the variances.
See Also
