stddev_pop

Returns population standard deviation of the expression in a group.

Syntax

Python

from pyspark.sql import functions as sf

sf.stddev_pop(col)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or column name	Target column to compute on.

Returns

pyspark.sql.Column: standard deviation of given column.

Examples

Python

import pyspark.sql.functions as sf
spark.range(6).select(sf.stddev_pop("id")).show()

Output

+-----------------+
|   stddev_pop(id)|
+-----------------+
|1.707825127659...|
+-----------------+