pyspark.sql.functions.stddev_pop¶
-
pyspark.sql.functions.
stddev_pop
(col: ColumnOrName) → pyspark.sql.column.Column[source]¶ Aggregate function: returns population standard deviation of the expression in a group.
New in version 1.6.0.
Changed in version 3.4.0: Supports Spark Connect.
- Parameters
- col
Column
or str target column to compute on.
- col
- Returns
Column
standard deviation of given column.
Examples
>>> df = spark.range(6) >>> df.select(stddev_pop(df.id)).first() Row(stddev_pop(id)=1.70782...)