pyspark.sql.functions.stddev

pyspark.sql.functions.stddev(col)

Aggregate function: alias for stddev_samp.

Added in version 1.6.0.

Changed in version 3.4.0: Supports Spark Connect.

Parameters:

colColumn or column name

target column to compute on. A column that evaluates to a numeric.

Returns:

Column

standard deviation of given column. Returns a column that evaluates to a double.

See also

pyspark.sql.functions.std()

pyspark.sql.functions.stddev_pop()

pyspark.sql.functions.stddev_samp()

pyspark.sql.functions.variance()

pyspark.sql.functions.skewness()

pyspark.sql.functions.kurtosis()

Examples

>>> import pyspark.sql.functions as sf
>>> spark.range(6).select(sf.stddev("id")).show()
+------------------+
|        stddev(id)|
+------------------+
|1.8708286933869...|
+------------------+