system.math.variance
This function is used in Python Scripting.
Description​
Given a sequence of values, calculates the variance of all values. Variance measures how far values in a set are spread out from their mean value.
Returns NaN (Not a Number) if passed an empty sequence.
Client Permission Restrictions​
This scripting function has no Client Permission restrictions.
Syntax​
system.math.variance(values)
Parameters​
| Type | Parameter | Description |
|---|---|---|
| List[Float] | values | A sequence of numerical values. Accepts both integers and floats. The sequence may not contain None type values. However, passing a None type object instead of a sequence of numerical values will return NaN. |
Returns​
Float - The variance of all values in the values parameter, or NaN if the input was empty or null.
Scope​
Gateway, Vision Client, Perspective Session
Code Examples​
Example #1
# Create a list of values.
values = [3.5, 5.6, 7.8, 7.4, 3.8]
# Print the resulting value.
print system.math.variance(values)
Keywords​
system math variance, math.variance