var
Syntax
var(expOrList, varOrFreqList)
Description
Calculates the variance of a continuous or discrete distribution. This function
has the same parameters as sd.
Warning
This function does not work for all possible inputs. In particular it won't work for the normal distribution.
Parameters
expOrList
An expression (for a continuous distribution) or a list (for a discrete distribution)
that defines the distribution.
varOrFreqList
For a continuous distribution this should be the variable in expOrList.
For a discrete distribution this can either be a frequency list describing how often
each element in expOrList occurs or void. Elements of the frequency
list can be any real number. If varOrFreqList
is void each element is assumed to have occurred once.
Return Value
The variance.
Examples
